5GB SIM-only deals

Light data, low price — SIMs from 5GB to 10GB, cheapest first.
24 deals, cheapest first
Lebara
Lebara
Uses VodafoneThree masts
12-month contract
5GB Data5G
Voucher dealNo price risesEU roaming includedeSIM available
Important to know
  • ⚠You must enter the code LEBARA5 at Lebara's checkout to get the intro price — without it you pay £4.50 a month from the start
  • −Unused data does not roll over to the next month
£1.49/mo
for the first 3 months with code LEBARA5
  • Then £4.50 a month after that
  • £44.97 total over 12 months
  • Average over 12 months: £3.75 a month
  • £0 upfront · no cashback required
Get this deal from Lebara*
Lebara
Lebara
Uses VodafoneThree masts
monthly rolling
5GB Data5G
Voucher dealNo price risesEU roaming includedeSIM available
Important to know
  • ⚠You must enter the code LEBARA5 at Lebara's checkout to get the intro price — without it you pay £5.00 a month from the start
  • −Unused data does not roll over to the next month
£1.49/mo
for the first 3 months with code LEBARA5
  • Then £5.00 a month after that
  • Monthly rolling — cancel or change any time
  • Average over your first 12 months: £4.12 a month
  • £0 upfront · no contract tying you to future price changes
Get this deal from Lebara*
Lycamobile
Lycamobile
Uses EE masts
monthly rolling
5GB Data5G
Unlimited minutes & texts
eSIM availableWi-Fi calling included100 international mins
Important to know
  • ⚠EU roaming is included at no extra cost in most bundles, but not on every plan.
  • −Unused data does not roll over to the next month
£3.50/mo
for the first month
  • Then £5.00 a month after that
  • Monthly rolling — cancel or change any time
  • Average over your first 12 months: £4.88 a month
  • £0 upfront · no contract tying you to future price changes
Get this deal from Lycamobile*
Lycamobile
Lycamobile
Uses EE masts
monthly rolling
6GB Data5G
Unlimited minutes & texts
No price riseseSIM availableWi-Fi calling included100 international mins
Important to know
  • ⚠EU roaming is included at no extra cost in most bundles, but not on every plan.
  • −Unused data does not roll over to the next month
£3.00/mo
for the first 3 months
  • Then £6.00 a month after that
  • Monthly rolling — cancel or change any time
  • Average over your first 12 months: £5.25 a month
  • £0 upfront · no contract tying you to future price changes
Get this deal from Lycamobile*
Vodafone
Vodafone
Uses Vodafone network
monthly rolling
8GB Data5G
Unlimited minutes & texts
eSIM availableWi-Fi calling included
Important to know
  • ⚠EU roaming: Zone A roaming is included on all pay monthly plans, but wider European roaming needs a Plus or Premier plan…
£10.00/mo
cancel or change any time
  • £0 upfront · no contract tying you to future price changes
27GB for first 3 months
Get this deal from Vodafone*
Show 10 more deals — each beaten on price or data by one above
NOW Mobile
NOW Mobile
Uses EE masts
monthly rolling
5GB Data5G
2000 mins & 2000 texts
No price risesWi-Fi calling included
Important to know
  • ⚠EU roaming: Some plans come with free EU roaming, but it is not stated as included on all plans.
  • −Unused data does not roll over to the next month
£7.50/mo
cancel or change any time
  • £0 upfront · no contract tying you to future price changes
Get this deal from NOW Mobile
Sky Mobile
Sky Mobile
Uses O2 masts
12-month contract
5GB Data5G
Unlimited minutes & texts
eSIM availableWi-Fi calling included
Important to know
  • ⚠Roaming Passport Plus costs £2 a day in 120 destinations; only the Republic of Ireland is free.
  • ⚠Sky Mobile raises prices each year during the contract
£12.00/mo
every month of the contract
  • £144.00 total over 12 months
  • £0 upfront · no cashback required
Get this deal from Sky Mobile
Vodafone
Vodafone
Uses Vodafone network
24-month contract
5GB Data5G
Unlimited minutes & texts
eSIM availableWi-Fi calling included
Important to know
  • ⚠EU roaming: Zone A roaming is included on all pay monthly plans, but wider European roaming needs a Plus or Premier plan…
£19.00/mo
until 31 March 2027
  • Then £21.50 a month from 1 April 2027 until 31 March 2028
  • Then £24.00 a month from 1 April 2028
  • £506.00 total over 24 months
  • Average over 24 months: £21.08 a month
  • £0 upfront · no cashback required
Get this deal from Vodafone*
EE
EE
Uses EE network
24-month contract
5GB Data5G
eSIM availableWi-Fi calling included
Important to know
  • ⚠EU roaming: A daily charge applies to use allowances in the EU/EEA on standard plans, while Essentials Plus, All Rounder…
  • −Unused data does not roll over to the next month
£22.00/mo
until 28 February 2027
  • Then £24.50 a month from 1 March 2027 until 28 February 2028
  • Then £27.00 a month from 1 March 2028
  • £583.00 total over 24 months
  • Average over 24 months: £24.29 a month
  • £0 upfront · no cashback required
Get this deal from EE
EE
EE
Uses EE network
monthly rolling
5GB Data5G
eSIM availableWi-Fi calling included
Important to know
  • ⚠EU roaming: A daily charge applies to use allowances in the EU/EEA on standard plans, while Essentials Plus, All Rounder…
  • −Unused data does not roll over to the next month
£27.00/mo
cancel or change any time
  • £0 upfront · no contract tying you to future price changes
Get this deal from EE
Vodafone
Vodafone
Uses Vodafone network
monthly rolling
5GB Data5G
Unlimited minutes & texts
eSIM availableWi-Fi calling included
Important to know
  • ⚠EU roaming: Zone A roaming is included on all pay monthly plans, but wider European roaming needs a Plus or Premier plan…
£30.00/mo
cancel or change any time
  • £0 upfront · no contract tying you to future price changes
Get this deal from Vodafone*
Want to pay from your bank? See the rolling SIMs you can pay by Direct Debit →

Monthly prices are each provider’s current cost, checked against their site — last updated 8 August 2026. Links marked * earn us a commission if you buy — it never changes what you pay, and it plays no part in how we rank deals.