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SIM only · By data

Cheapest SIM only deals with 20GB to 99GB

For regular streaming and social media on the go, without paying for unlimited.

10 deals from 8 providers. Cheapest: Lyca Mobile National Plus 30GB at £5 a month.

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Contract
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10 deals

Lyca Mobile

National Plus 30GB

  • 30GB data
  • 1-month rolling
  • EU roaming included
  • eSIM

Includes 100 international minutes.

Check coverage at your postcode

£5/mo

Price can change with notice. Leave any time.

View deal

Checked 26 Oct 2026

Lyca Mobile

Super Extra 75GB

  • 75GB data
  • 1-month rolling
  • EU roaming included
  • eSIM

Includes 100 international minutes.

Check coverage at your postcode

£7.50/mo

Price can change with notice. Leave any time.

View deal

Checked 26 Oct 2026

giffgaff

80GB 18-month

  • 80GB data
  • 18 months
  • O2 network
  • EU roaming included
  • Fixed price

25GB plus 55GB extra free, if activated by 30 October.

Check O2 coverage at your postcode

£10/mo

Total cost: £180 · avg £10.00/mo

View deal

Checked 15 Oct 2026

VOXI

75GB + unlimited social, music and video

  • 75GB data
  • 1-month rolling
  • Vodafone network
  • 5G
  • Roaming pass needed
  • eSIM

75GB is a 3x data offer until 26 November, then 25GB.

Check Vodafone coverage at your postcode

£12/mo

Rolling monthly. Leave any time.

View deal

Checked 26 Oct 2026

VOXI

35GB + unlimited social, music and video

  • 35GB data
  • 1-month rolling
  • Vodafone network
  • 5G
  • Roaming pass needed
  • eSIM

Social, music and video apps don't use your data.

Check Vodafone coverage at your postcode

£15/mo

Rolling monthly. Leave any time.

View deal

Checked 26 Oct 2026

O2

40GB Classic

  • 40GB data
  • 24 months
  • O2 network
  • 5G
  • EU roaming included
  • eSIM
Check O2 coverage at your postcode

£19.50/mo

  • then £22 from Apr 2027
  • then £24.50 from Apr 2028

Total cost: £528 · avg £22.00/mo

View deal

Checked 15 Oct 2026

Vodafone

30GB

  • 30GB data
  • 24 months
  • Vodafone network
  • 5G
  • EU roaming extra
  • eSIM

Download speed capped at 100Mbps.

Check Vodafone coverage at your postcode

£22/mo

  • then £24.50 from Apr 2027
  • then £27 from Apr 2028

Total cost: £588 · avg £24.50/mo

View deal

Checked 26 Oct 2026

What happens when you click View deal: you go to the provider's own site to check your address and order. Your contract and any problems with installation or billing are with the provider. MoneyRoute never takes payment or your details.

Living with 20gb to 99gb data

This range suits people who stream video or music on the move most days. 50GB is roughly 16 hours of Netflix in HD at Netflix's figure of up to 3GB an hour.

Prices here are often close to the bigger plans, so check whether 100GB or unlimited costs only a little more.

Cheapest 20gb to 99gb plan from each provider

ProviderPlanNetworkContractMonthlyEU roaming
Lyca Mobile Super Extra 75GB Not stated Rolling £7.50 Included
Talkmobile 30GB 30-day Vodafone Rolling £6.95 Included
iD Mobile 50GB 12-month Three 12 months £8 Included
giffgaff 80GB 18-month O2 18 months £10 Included
SMARTY 40GB Three Rolling £10 Included
VOXI 35GB + unlimited social, music and video Vodafone Rolling £15 Pass needed
O2 40GB Classic O2 24 months £19.50 Included
Vodafone 30GB Vodafone 24 months £22 Daily charge

How far does that data go?

Hours of Netflix each allowance covers in a month, using Netflix's figures of up to 1GB an hour in standard definition, 3GB in HD and 7GB in 4K. Messaging, maps and browsing use far less.

DataStandard definitionHD4K
30GB 30 hours 10 hours 4 hours
35GB 35 hours 11 hours 5 hours
40GB 40 hours 13 hours 5 hours
50GB 50 hours 16 hours 7 hours
75GB 75 hours 25 hours 10 hours
80GB 80 hours 26 hours 11 hours

20GB to 99GB SIM only questions

Which is the cheapest 20gb to 99gb SIM only deal?

Lyca Mobile National Plus 30GB at £5 a month on a rolling plan. Note: Includes 100 international minutes.

Should I choose a rolling plan or a contract?

6 of the 10 plans here roll monthly, so you can leave or change any time. Contracts can be cheaper for the same data, but 2 of the plans here have rises during the contract, shown on each deal.

Do these plans include EU roaming?

7 of the 10 plans include EU roaming, usually with a fair use limit. The others charge a daily fee or need a pass. Use the roaming filter above to see only plans that include it.

Is a budget brand as good as a big network?

Budget brands run on one of the four networks, so the coverage is the same as that network's. Each plan above shows which network it uses.

Other data amounts

Data use figures: Netflix: how much data does Netflix use?