SIM deals, ranked by what they really cost

The price in a SIM advert is often the price for the first few months. We rank every plan by its average monthly cost across the whole contract, with intro offers, price rises and roaming limits next to the price, not in the small print.

Advert vs reality

Lyca Pay monthly 24m Unlimited Plus · Unlimited, 24 months

Advertised£12.00Really, per month£21.00

Month 1Month 24

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110Plans compared

7Networks

29Advertised at an intro price

12Beaten by the same network

Skip the small printSee all 110 prices

What we foundCatches in the small print

Intro prices. 29 plans are advertised at a price that only lasts a few months. The biggest gap is Exhibit A above. Lyca half price, in full → iD Mobile half price, in full →
Same price, less data. 8 of giffgaff's pay-as-you-go plans give less data than its monthly rolling plan at the same price. Price by price →
Better plan, same network. 12 plans are beaten by another plan from the same network. They carry a green tag below.
Clubcard prices. 4 Tesco Mobile plans are cheaper with a Clubcard, which is free to join. We rank the price everyone pays and show the Clubcard price beside it. Tesco Mobile's price rises, in pounds →
"Roaming included" varies. EU data allowances run from 2.5GB to 35GB, and VOXI charges for a roaming pass. EU roaming compared →

Head to headCompare two networks

Lebara vs LycaVodafone · EE VOXI vs SMARTYVodafone · Three SMARTY vs iD MobileThree · Three Lebara vs VOXIVodafone · Vodafone Lebara vs SMARTYVodafone · Three iD Mobile vs VOXIThree · Vodafone Tesco Mobile vs giffgaffO2 · O2 giffgaff vs VOXIO2 · Vodafone SMARTY vs giffgaffThree · O2 giffgaff vs LebaraO2 · Vodafone

All 110 plansEvery plan, cheapest real cost first

What the columns mean

Plan: The network's own name for the plan. The coloured tags under it are the catches: intro prices, bonus data that ends, Clubcard-only prices, price rises and roaming limits.
Data: Your monthly UK data once any bonus data has ended. "Unlimited" is subject to the network's fair-use policy.
Contract: Rolling: a monthly plan you can leave any month. Its price is not fixed unless the network says so. 12m / 18m / 24m: a fixed-term contract for that many months, usually cheaper per month but you are tied in, and leaving early normally costs a fee. We have not collected exit fees, so check the network's terms.
Real cost / month: The average of every monthly payment across the whole contract (24 months for rolling plans), including intro prices ending and stated price rises. This is the number plans are ranked by, not the advertised price.
Price over time: Each block is a run of months at one price. Green is an intro price, grey the normal price, red the price after a stated rise. Taller means dearer.
Total: Everything you would pay across the contract (24 months for rolling plans).
£/GB: Real cost per month divided by the monthly data. Lower is better value. Not shown for unlimited plans.
EU roaming: Whether you can use your allowance in the EU at no extra cost, and any data cap while you are there.

Plan	Data	Contract	Real cost / month	Total	£/GB	EU roaming
Lebara12-month 5GB (1000 mins)5GB · 12 months 1,000 UK minutes, not unlimited	5GB	12m	£4.50	£54.00 12 months	£0.90	included (fair use applies)	Lebara
LycaPAYG UK Plan Smart (1000 mins)5GB · Rolling monthly £3.50 for the first month, then £5.00 1,000 UK minutes, not unlimited	5GB	Rolling	£4.94advert £3.50+41% vs advert	£118.50 24 months	£0.99	included (5GB cap)	Lyca
Lebara30-day 5GB (1000 mins)5GB · Rolling monthly 1,000 UK minutes, not unlimited	5GB	Rolling	£5.00	£120.00 24 months	£1.00	included (fair use applies)	Lebara
LycaPay monthly 24m 12GB12GB · 24 months £3.00 for the first 3 months, then £6.00	12GB	24m	£5.62advert £3.00+88% vs advert	£135.00 24 months	£0.47	included (2.5GB)	Lyca
LycaPay monthly 1m 6GB6GB · Rolling monthly £3.00 for the first 3 months, then £6.00	6GB	Rolling	£5.62advert £3.00+88% vs advert	£135.00 24 months	£0.94	included (2.5GB)	Lyca
LycaPay monthly 12m 10GB10GB · 12 months £3.00 for the first month, then £6.00	10GB	12m	£5.75advert £3.00+92% vs advert	£69.00 12 months	£0.57	included (2.5GB)	Lyca
iD Mobile24m 10GB10GB · 24 months	10GB	24m	£6.00	£144.00 24 months	£0.60	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile12m 8GB8GB · 12 months	8GB	12m	£6.00	£72.00 12 months	£0.75	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile1m 6GB6GB · Rolling monthly	6GB	Rolling	£6.00	£144.00 24 months	£1.00	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY5GB5GB · Rolling monthly	5GB	Rolling	£6.00	£144.00 24 months	£1.20	included (12GB fair use)	SMARTY
giffgaffRolling 2GB2GB · Rolling monthly	2GB	Rolling	£6.00	£144.00 24 months	£3.00	included (up to 5GB)	giffgaff
giffgaffPAYG 1GB1GB · Rolling monthly Same network, better deal: Rolling 2GB (2GB, £6.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	1GB	Rolling	£6.00	£144.00 24 months	£6.00	included (up to 5GB)	giffgaff
iD Mobile24m 30GB30GB · 24 months	30GB	24m	£7.00	£168.00 24 months	£0.23	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile12m 20GB20GB · 12 months	20GB	12m	£7.00	£84.00 12 months	£0.35	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile1m 10GB10GB · Rolling monthly	10GB	Rolling	£7.00	£168.00 24 months	£0.70	included (50 destinations, 30GB fair use)	iD Mobile
LycaPay monthly 24m 50GB50GB · 24 months £4.00 for the first 3 months, then £8.00	50GB	24m	£7.50advert £4.00+88% vs advert	£180.00 24 months	£0.15	included (12GB)	Lyca
LycaPay monthly 12m 40GB40GB · 12 months £4.00 for the first month, then £8.00	40GB	12m	£7.67advert £4.00+92% vs advert	£92.00 12 months	£0.19	included (12GB)	Lyca
Tesco Mobile24m 2GB2GB · 24 months Rises to £7.95 on 1 April 2027 Rises to £8.42 on 1 April 2028	2GB	24m	£7.95advert £7.50	£190.92 24 months	£3.98	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile24m 60GB60GB · 24 months	60GB	24m	£8.00	£192.00 24 months	£0.13	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile12m 50GB50GB · 12 months	50GB	12m	£8.00	£96.00 12 months	£0.16	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile1m 40GB40GB · Rolling monthly	40GB	Rolling	£8.00	£192.00 24 months	£0.20	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY16GB16GB · Rolling monthly 32GB for 15 months, then 16GB	16GB	Rolling	£8.00	£192.00 24 months	£0.50	included (12GB fair use)	SMARTY
giffgaff18m 6GB6GB · 18 months 40GB for 18 months, then 6GB	6GB	18m	£8.00	£144.00 18 months	£1.33	included (up to 5GB)	giffgaff
giffgaffRolling 5GB5GB · Rolling monthly	5GB	Rolling	£8.00	£192.00 24 months	£1.60	included (up to 5GB)	giffgaff
giffgaffPAYG 4GB4GB · Rolling monthly Same network, better deal: Rolling 5GB (5GB, £8.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	4GB	Rolling	£8.00	£192.00 24 months	£2.00	included (up to 5GB)	giffgaff
Tesco Mobile12m 2GB2GB · 12 months Rises to £8.48 on 1 April 2027	2GB	12m	£8.24advert £8.00	£98.88 12 months	£4.12	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile24m 100GB100GB · 24 months £5.00 for the first 6 months, then £10.00	100GB	24m	£8.75advert £5.00+75% vs advert	£210.00 24 months	£0.09	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile12m 90GB90GB · 12 months £5.00 for the first 3 months, then £10.00	90GB	12m	£8.75advert £5.00+75% vs advert	£105.00 12 months	£0.10	included (50 destinations, 30GB fair use)	iD Mobile
Lebara12-month 30GB30GB · 12 months	30GB	12m	£9.00	£108.00 12 months	£0.30	included (fair use applies)	Lebara
SMARTY20GB20GB · Rolling monthly	20GB	Rolling	£9.00	£216.00 24 months	£0.45	included (12GB fair use)	SMARTY
LycaPAYG National Plus30GB · Rolling monthly £5.00 for the first month, then £10.00	30GB	Rolling	£9.79advert £5.00+96% vs advert	£235.00 24 months	£0.33	included (12GB cap)	Lyca
LycaPay monthly 1m 30GB30GB · Rolling monthly £5.00 for the first month, then £10.00	30GB	Rolling	£9.79advert £5.00+96% vs advert	£235.00 24 months	£0.33	included (12GB)	Lyca
iD Mobile1m 80GB80GB · Rolling monthly	80GB	Rolling	£10.00	£240.00 24 months	£0.12	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY40GB40GB · Rolling monthly	40GB	Rolling	£10.00	£240.00 24 months	£0.25	included (12GB fair use)	SMARTY
Lebara30-day 30GB30GB · Rolling monthly	30GB	Rolling	£10.00	£240.00 24 months	£0.33	included (fair use applies)	Lebara
giffgaff18m 25GB25GB · 18 months 80GB for 18 months, then 25GB	25GB	18m	£10.00	£180.00 18 months	£0.40	included (up to 5GB)	giffgaff
giffgaffRolling 20GB20GB · Rolling monthly	20GB	Rolling	£10.00	£240.00 24 months	£0.50	included (up to 5GB)	giffgaff
VOXI£10 20GB + unlimited social (7 apps)20GB · Rolling monthly EU roaming needs a paid pass	20GB	Rolling	£10.00	£240.00 24 months	£0.50	paid pass required (European Roaming Pass from £2.60/day; 20GB fair use)	VOXI
giffgaffPAYG 15GB15GB · Rolling monthly Same network, better deal: Rolling 20GB (20GB, £10.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	15GB	Rolling	£10.00	£240.00 24 months	£0.67	included (up to 5GB)	giffgaff
Tesco Mobile24m 12GB12GB · 24 months £9.00 a month with a free Clubcard, fixed for the contract, for new joiners until 1 November 2026 No price rise stated for this plan, though Tesco Mobile's other plans rise each April; we assume none, which may flatter it	12GB	24m	£10.00£9.00 with Clubcard	£240.00 24 months	£0.83	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile12m 150GB150GB · 12 months £6.00 for the first 3 months, then £12.00	150GB	12m	£10.50advert £6.00+75% vs advert	£126.00 12 months	£0.07	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile24m 150GB150GB · 24 months £6.00 for the first 6 months, then £12.00 Same network, better deal: 12m 150GB (150GB, £10.50/month, 12 months).	150GB	24m	£10.50advert £6.00+75% vs advert	£252.00 24 months	£0.07	included (50 destinations, 30GB fair use)	iD Mobile
LycaPay monthly 24m 100GB100GB · 24 months £6.00 for the first 6 months, then £12.00	100GB	24m	£10.50advert £6.00+75% vs advert	£252.00 24 months	£0.10	included (12GB)	Lyca
LycaPay monthly 12m 90GB90GB · 12 months £6.00 for the first 3 months, then £12.00	90GB	12m	£10.50advert £6.00+75% vs advert	£126.00 12 months	£0.12	included (12GB)	Lyca
Tesco Mobile12m 12GB12GB · 12 months Rises to £11.66 on 1 April 2027	12GB	12m	£11.33advert £11.00	£135.96 12 months	£0.94	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile1m 120GB120GB · Rolling monthly	120GB	Rolling	£12.00	£288.00 24 months	£0.10	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY100GB100GB · Rolling monthly 140GB for 15 months, then 100GB	100GB	Rolling	£12.00	£288.00 24 months	£0.12	included (12GB fair use)	SMARTY
giffgaff18m 50GB50GB · 18 months	50GB	18m	£12.00	£216.00 18 months	£0.24	included (up to 5GB)	giffgaff
giffgaffRolling 26GB26GB · Rolling monthly	26GB	Rolling	£12.00	£288.00 24 months	£0.46	included (up to 5GB)	giffgaff
giffgaffPAYG 25GB25GB · Rolling monthly Same network, better deal: Rolling 26GB (26GB, £12.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	25GB	Rolling	£12.00	£288.00 24 months	£0.48	included (up to 5GB)	giffgaff
VOXI£12 25GB + unlimited social, music, video25GB · Rolling monthly 75GB until 26 November 2026, then 25GB EU roaming needs a paid pass	25GB	Rolling	£12.00	£288.00 24 months	£0.48	paid pass required (European Roaming Pass from £2.60/day; 20GB fair use)	VOXI
iD Mobile24m 250GB250GB · 24 months £7.00 for the first 6 months, then £14.00	250GB	24m	£12.25advert £7.00+75% vs advert	£294.00 24 months	£0.05	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile12m 200GB200GB · 12 months £7.00 for the first 3 months, then £14.00	200GB	12m	£12.25advert £7.00+75% vs advert	£147.00 12 months	£0.06	included (50 destinations, 30GB fair use)	iD Mobile
Tesco Mobile24m 30GB30GB · 24 months Rises to £13.25 on 1 April 2027 Rises to £14.04 on 1 April 2028	30GB	24m	£13.26advert £12.50	£318.24 24 months	£0.44	included (48 Home from Home destinations)	Tesco Mobile
Lebara12-month 50GB50GB · 12 months	50GB	12m	£13.50	£162.00 12 months	£0.27	included (fair use applies)	Lebara
Tesco Mobile24m 45GB45GB · 24 months £11.00 a month with a free Clubcard, fixed for the contract, for new joiners until 1 November 2026 No price rise stated for this plan, though Tesco Mobile's other plans rise each April; we assume none, which may flatter it	45GB	24m	£13.75£11.00 with Clubcard	£330.00 24 months	£0.31	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile1m 200GB200GB · Rolling monthly	200GB	Rolling	£14.00	£336.00 24 months	£0.07	included (50 destinations, 30GB fair use)	iD Mobile
LycaPay monthly 24m 120GB120GB · 24 months £8.00 for the first 6 months, then £16.00	120GB	24m	£14.00advert £8.00+75% vs advert	£336.00 24 months	£0.12	included (12GB)	Lyca
LycaPAYG UK Plan Super Extra75GB · Rolling monthly £7.50 for the first month, then £15.00	75GB	Rolling	£14.69advert £7.50+96% vs advert	£352.50 24 months	£0.20	included (12GB cap)	Lyca
LycaPay monthly 1m 50GB50GB · Rolling monthly £7.50 for the first month, then £15.00 Same network, better deal: PAYG UK Plan Super Extra (75GB, £14.69/month, rolling monthly).	50GB	Rolling	£14.69advert £7.50+96% vs advert	£352.50 24 months	£0.29	included (12GB)	Lyca
iD Mobile1m 250GB250GB · Rolling monthly	250GB	Rolling	£15.00	£360.00 24 months	£0.06	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY150GB150GB · Rolling monthly	150GB	Rolling	£15.00	£360.00 24 months	£0.10	included (12GB fair use)	SMARTY
giffgaff18m 100GB100GB · 18 months	100GB	18m	£15.00	£270.00 18 months	£0.15	included (up to 5GB)	giffgaff
giffgaffRolling 50GB50GB · Rolling monthly	50GB	Rolling	£15.00	£360.00 24 months	£0.30	included (up to 5GB)	giffgaff
Lebara30-day 50GB50GB · Rolling monthly	50GB	Rolling	£15.00	£360.00 24 months	£0.30	included (fair use applies)	Lebara
VOXI£15 35GB + unlimited social, music, video35GB · Rolling monthly EU roaming needs a paid pass	35GB	Rolling	£15.00	£360.00 24 months	£0.43	paid pass required (European Roaming Pass from £2.60/day; 20GB fair use)	VOXI
giffgaffPAYG 30GB30GB · Rolling monthly Same network, better deal: Rolling 50GB (50GB, £15.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	30GB	Rolling	£15.00	£360.00 24 months	£0.50	included (up to 5GB)	giffgaff
Tesco Mobile12m 30GB30GB · 12 months Rises to £15.90 on 1 April 2027	30GB	12m	£15.45advert £15.00	£185.40 12 months	£0.52	included (48 Home from Home destinations)	Tesco Mobile
LycaPay monthly 24m UnlimitedUnlimited · 24 months £9.00 for the first 6 months, then £18.00 Unlimited data is subject to fair use	Unlimited	24m	£15.75advert £9.00+75% vs advert	£378.00 24 months	—	included (30GB)	Lyca
LycaPay monthly 12m 120GB120GB · 12 months £9.00 for the first 3 months, then £18.00	120GB	12m	£15.75advert £9.00+75% vs advert	£189.00 12 months	£0.13	included (12GB)	Lyca
Tesco Mobile24m 60GB60GB · 24 months Rises to £15.90 on 1 April 2027 Rises to £16.85 on 1 April 2028	60GB	24m	£15.91advert £15.00	£381.90 24 months	£0.27	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile24m UnlimitedUnlimited · 24 months Unlimited data is subject to fair use	Unlimited	24m	£16.00	£384.00 24 months	—	included (50 destinations, 30GB fair use)	iD Mobile
iD Mobile1m 300GB300GB · Rolling monthly	300GB	Rolling	£16.00	£384.00 24 months	£0.05	included (50 destinations, 30GB fair use)	iD Mobile
Tesco Mobile12m 45GB45GB · 12 months Rises to £17.22 on 1 April 2027	45GB	12m	£16.73advert £16.25	£200.82 12 months	£0.37	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile12m UnlimitedUnlimited · 12 months Unlimited data is subject to fair use	Unlimited	12m	£17.00	£204.00 12 months	—	included (50 destinations, 30GB fair use)	iD Mobile
SMARTY200GB200GB · Rolling monthly	200GB	Rolling	£17.00	£408.00 24 months	£0.09	included (12GB fair use)	SMARTY
Tesco Mobile24m 75GB75GB · 24 months Rises to £17.22 on 1 April 2027 Rises to £18.25 on 1 April 2028	75GB	24m	£17.23advert £16.25	£413.64 24 months	£0.23	included (48 Home from Home destinations)	Tesco Mobile
Tesco Mobile24m 100GB100GB · 24 months £14.00 a month with a free Clubcard, fixed for the contract, for new joiners until 1 November 2026 No price rise stated for this plan, though Tesco Mobile's other plans rise each April; we assume none, which may flatter it	100GB	24m	£17.50£14.00 with Clubcard	£420.00 24 months	£0.17	included (48 Home from Home destinations)	Tesco Mobile
iD Mobile1m UnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use	Unlimited	Rolling	£18.00	£432.00 24 months	—	included (50 destinations, 30GB fair use)	iD Mobile
Lebara12-month 100GB100GB · 12 months	100GB	12m	£18.00	£216.00 12 months	£0.18	included (fair use applies)	Lebara
Tesco Mobile12m 60GB60GB · 12 months Rises to £18.55 on 1 April 2027	60GB	12m	£18.03advert £17.50	£216.30 12 months	£0.30	included (48 Home from Home destinations)	Tesco Mobile
LycaPay monthly 12m UnlimitedUnlimited · 12 months £11.00 for the first 3 months, then £22.00 Unlimited data is subject to fair use	Unlimited	12m	£19.25advert £11.00+75% vs advert	£231.00 12 months	—	included (30GB)	Lyca
Tesco Mobile12m 75GB75GB · 12 months Rises to £19.87 on 1 April 2027	75GB	12m	£19.31advert £18.75	£231.72 12 months	£0.26	included (48 Home from Home destinations)	Tesco Mobile
LycaPAYG UK Plan Mega Plus120GB · Rolling monthly £10.00 for the first month, then £20.00	120GB	Rolling	£19.58advert £10.00+96% vs advert	£470.00 24 months	£0.16	included (12GB cap)	Lyca
SMARTYUnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use	Unlimited	Rolling	£20.00	£480.00 24 months	—	included (12GB fair use)	SMARTY
giffgaff18m 200GB200GB · 18 months	200GB	18m	£20.00	£360.00 18 months	£0.10	included (up to 5GB)	giffgaff
giffgaffRolling 100GB100GB · Rolling monthly	100GB	Rolling	£20.00	£480.00 24 months	£0.20	included (up to 5GB)	giffgaff
Lebara30-day 100GB100GB · Rolling monthly	100GB	Rolling	£20.00	£480.00 24 months	£0.20	included (fair use applies)	Lebara
VOXI£20 100GB + unlimited social, music, video100GB · Rolling monthly 300GB until 26 November 2026, then 100GB EU roaming needs a paid pass	100GB	Rolling	£20.00	£480.00 24 months	£0.20	paid pass required (European Roaming Pass from £2.60/day; 20GB fair use)	VOXI
giffgaffPAYG 80GB80GB · Rolling monthly Same network, better deal: Rolling 100GB (100GB, £20.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	80GB	Rolling	£20.00	£480.00 24 months	£0.25	included (up to 5GB)	giffgaff
Tesco Mobile12m 100GB100GB · 12 months Rises to £21.20 on 1 April 2027	100GB	12m	£20.60advert £20.00	£247.20 12 months	£0.21	included (48 Home from Home destinations)	Tesco Mobile
LycaPay monthly 24m Unlimited PlusUnlimited · 24 months £12.00 for the first 6 months, then £24.00 Includes unlimited international minutes Unlimited data is subject to fair use	Unlimited	24m	£21.00advert £12.00+75% vs advert	£504.00 24 months	—	included (35GB)	Lyca
LycaPay monthly 1m 120GB120GB · Rolling monthly £11.00 for the first month, then £22.00 Same network, better deal: PAYG UK Plan Mega Plus (120GB, £19.58/month, rolling monthly).	120GB	Rolling	£21.54advert £11.00+96% vs advert	£517.00 24 months	£0.18	included (12GB)	Lyca
Lebara12-month UnlimitedUnlimited · 12 months Unlimited data is subject to fair use	Unlimited	12m	£22.50	£270.00 12 months	—	included (fair use applies)	Lebara
LycaPay monthly 1m UnlimitedUnlimited · Rolling monthly £12.00 for the first month, then £24.00 Unlimited data is subject to fair use	Unlimited	Rolling	£23.50advert £12.00+96% vs advert	£564.00 24 months	—	included (30GB)	Lyca
LycaPay monthly 12m Unlimited PlusUnlimited · 12 months £13.50 for the first 3 months, then £27.00 Includes unlimited international minutes Unlimited data is subject to fair use	Unlimited	12m	£23.62advert £13.50+75% vs advert	£283.50 12 months	—	included (35GB)	Lyca
Tesco Mobile24m 250GB250GB · 24 months Rises to £23.85 on 1 April 2027 Rises to £25.28 on 1 April 2028	250GB	24m	£23.87advert £22.50	£572.88 24 months	£0.10	included (48 Home from Home destinations)	Tesco Mobile
LycaPAYG UK Plan UnlimitedUnlimited · Rolling monthly £12.50 for the first month, then £25.00 Unlimited data is subject to fair use Same network, better deal: Pay monthly 1m Unlimited (Unlimited, £23.50/month, rolling monthly).	Unlimited	Rolling	£24.48advert £12.50+96% vs advert	£587.50 24 months	—	included (35GB cap)	Lyca
Lebara30-day UnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use	Unlimited	Rolling	£25.00	£600.00 24 months	—	included (fair use applies)	Lebara
Tesco Mobile24m UnlimitedUnlimited · 24 months £20.00 a month with a free Clubcard, fixed for the contract, for new joiners until 1 November 2026 No price rise stated for this plan, though Tesco Mobile's other plans rise each April; we assume none, which may flatter it Unlimited data is subject to fair use	Unlimited	24m	£25.00£20.00 with Clubcard	£600.00 24 months	—	included (48 Home from Home destinations)	Tesco Mobile
giffgaffRolling 200GB200GB · Rolling monthly	200GB	Rolling	£25.00	£600.00 24 months	£0.12	included (up to 5GB)	giffgaff
giffgaffPAYG 120GB120GB · Rolling monthly Same network, better deal: Rolling 200GB (200GB, £25.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	120GB	Rolling	£25.00	£600.00 24 months	£0.21	included (up to 5GB)	giffgaff
Tesco Mobile12m 250GB250GB · 12 months Rises to £26.50 on 1 April 2027	250GB	12m	£25.75advert £25.00	£309.00 12 months	£0.10	included (48 Home from Home destinations)	Tesco Mobile
Lebara12-month Unlimited PlusUnlimited · 12 months Includes unlimited international minutes Unlimited data is subject to fair use	Unlimited	12m	£27.00	£324.00 12 months	—	included (fair use applies)	Lebara
LycaPay monthly 1m Unlimited PlusUnlimited · Rolling monthly £15.00 for the first month, then £30.00 Includes unlimited international minutes Unlimited data is subject to fair use	Unlimited	Rolling	£29.38advert £15.00+96% vs advert	£705.00 24 months	—	included (35GB)	Lyca
Lebara30-day Unlimited PlusUnlimited · Rolling monthly Includes unlimited international minutes Unlimited data is subject to fair use	Unlimited	Rolling	£30.00	£720.00 24 months	—	included (fair use applies)	Lebara
Tesco Mobile12m UnlimitedUnlimited · 12 months Rises to £31.80 on 1 April 2027 Unlimited data is subject to fair use	Unlimited	12m	£30.90advert £30.00	£370.80 12 months	—	included (48 Home from Home destinations)	Tesco Mobile
giffgaffRolling UnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use	Unlimited	Rolling	£35.00	£840.00 24 months	—	included (up to 5GB)	giffgaff
VOXI£35 UnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use EU roaming needs a paid pass	Unlimited	Rolling	£35.00	£840.00 24 months	—	paid pass required (European Roaming Pass from £2.60/day; 20GB fair use)	VOXI
giffgaffPAYG 200GB200GB · Rolling monthly Same network, better deal: Rolling 200GB (200GB, £25.00/month, rolling monthly). It renews automatically each month; pay as you go does not.	200GB	Rolling	£35.00	£840.00 24 months	£0.17	included (up to 5GB)	giffgaff

Tablets and donglesData-only SIMs

Plan	Data	Contract	Real cost / month	Total	£/GB	EU roaming
SMARTYData Only 2GB2GB · Rolling monthly	2GB	Rolling	£5.00	£120.00 24 months	£2.50	included (12GB fair use)	SMARTY
SMARTYData Only 15GB15GB · Rolling monthly	15GB	Rolling	£9.00	£216.00 24 months	£0.60	included (12GB fair use)	SMARTY
SMARTYData Only 40GB40GB · Rolling monthly	40GB	Rolling	£13.00	£312.00 24 months	£0.33	included (12GB fair use)	SMARTY
SMARTYData Only 100GB100GB · Rolling monthly	100GB	Rolling	£17.00	£408.00 24 months	£0.17	included (12GB fair use)	SMARTY
SMARTYData Only UnlimitedUnlimited · Rolling monthly Unlimited data is subject to fair use	Unlimited	Rolling	£20.00	£480.00 24 months	—	included (12GB fair use)	SMARTY

The small print, in large printWhat these numbers don't tell you

Real cost / month assumes you join on 2 October 2026 and stay for the whole contract. Rolling plans are costed over 24 months at today's price; a rolling plan's price is not fixed unless the network says so, but you can leave any month.
Stated price rises are included where the network publishes them in pounds and pence. Where a network says nothing about rises, we assume none, which may flatter it.
Not included yet: early exit fees on contracts, speed caps, fair-use limits on "unlimited" data, tethering limits and charges for going over your allowance. We have not collected these, so we make no claims about them.
£/GB uses the ongoing allowance, not temporary bonus data.
Price over time bars: green months are an intro price, grey the normal price, red months after a stated rise. Bar height is that month's price.
Coverage depends on where you live. Check your postcode on Ofcom's coverage checker.
1 plan(s) recorded on 2 October 2026 are left out because their offer has closed and we have not yet recorded the price that replaced it.