Ranked by true cost

SIM only & pay as you go

Already got a handset you are happy with? A SIM-only plan is almost always cheaper. Rolling 30-day plans and pay-as-you-go bundles let you leave whenever you like.

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28 deals match your filters. Prices last checked 4 November 2026.

O2O2
O2 SIM Only on Mini Unlimited (1 Month contract) with Unlim…
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
TermRolling
Unlimited data 5G 6 months Free Disney+ O2 Priority Charge to mobile Recommend a Friend and Earn Rewards
SIM onlyRolling
£38.00/mo
No contract — leave any month.
See deal at O2
O2O2
O2 SIM Only on Ultimate Unlimited (12 Month contract) with …
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term12 mths
Unlimited data 5G O2 Priority Charge to mobile Recommend a Friend and Earn Rewards Data Rollover
SIM only12 months
£41.99/mo
£41.99 × 12£503.88
See deal at O2
O2O2
O2 SIM Only on Ultimate Unlimited (12 Month contract) with …
SIM only
DataUnlimited
MinutesUnlimited
Texts100
Term12 mths
Unlimited data 5G O2 Priority Charge to mobile Recommend a Friend and Earn Rewards Data Rollover
SIM only12 months
£41.99/mo
£41.99 × 12£503.88
See deal at O2
MoMozillion
Runs on EE
Mozillion SIM only
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term24 mths
Unlimited data
SIM only24 months
£22.00/mo
£22.00 × 24£1,056
See deal at Mozillion
MoMozillion
Runs on EE
Mozillion SIM only
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
Term12 mths
Unlimited data
SIM only12 months
£22.50/mo
£22.50 × 12£540
See deal at Mozillion
MoMozillion
Runs on EE
Mozillion SIM only
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
TermRolling
Unlimited data
SIM onlyRolling
£23.00/mo
No contract — leave any month.
See deal at Mozillion
LeLebara
Runs on Vodafone
SIM Only Unlimited
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
TermRolling
Unlimited data 5G
SIM onlyRolling
£25.00/mo
No contract — leave any month.
See deal at Lebara
LeLebara
Runs on Vodafone
SIM Only Unlimited
SIM only
DataUnlimited
MinutesUnlimited
TextsUnlimited
TermRolling
Unlimited data 5G
SIM onlyRolling
£30.00/mo
No contract — leave any month.
See deal at Lebara