ukdeals Looking for a 1 month rolling SIM only UK deal without being tied to a long mobile contract? A rolling SIM can be a useful option if you want the freedom to change your plan, reduce your data allowance or switch provider without committing to a 12- or 24-month contract.
Unlike traditional long-term SIM-only contracts, many 30-day SIM plans can be changed or cancelled without a lengthy commitment. They can therefore be particularly useful if you are testing a network, need a temporary SIM or simply want more flexibility.
We have compared some of the current 1 month rolling SIM only deals in the UK, including options from Mozillion, 1pMobile and VOXI. For sim only contracts with varieties you can check this Best SIM-Only Deals UK
Deals checked: August 2026. Mobile prices and allowances can change, so check the provider’s website before ordering.
Best 1 month rolling SIM only deals in the UK
| Provider | Data | Calls & texts | Contract | Roaming | Price |
|---|---|---|---|---|---|
| Mozillion | 3GB | Unlimited | 1 month | EU roaming | £5/month |
| Mozillion | 30GB | Unlimited | 1 month | EU roaming | £9/month |
| Mozillion | 80GB | Unlimited | 1 month | EU roaming | £11/month |
| Mozillion | 100GB | Unlimited | 1 month | EU roaming | £13/month |
| 1pMobile | 5GB | Unlimited | 30 days | EU roaming | £5/30 days |
| 1pMobile | 50GB | Unlimited | 30 days | EU roaming | £10/30 days |
| 1pMobile | 100GB | Unlimited | 30 days | EU roaming | £15/30 days |
| VOXI | 60GB | Unlimited | 30 days | Check current terms | £10/month |
| VOXI | 140GB | Unlimited | 30 days | Check current terms | £15/month |
1. Mozillion 1 month rolling SIM only
Mozillion is one of the most interesting choices if you want a 1 month rolling SIM on the EE network.
Its current 1-month plans include:
- 3GB data – £5/month
- 10GB data – £7/month
- 30GB data – £9/month
- 80GB data – £11/month
- 100GB data – £13/month
- Unlimited data – £25/month
All listed plans include unlimited calls and texts and EU roaming.
Mozillion also advertises no credit check for its SIM-only plans, Wi-Fi calling and fixed-price contracts.
The 80GB plan for £11/month stands out for people who need a large amount of mobile data without committing to a long contract.
Mozillion 80GB for £11
If you regularly use mobile data for video, social media, navigation, music or tethering, the 80GB 1-month SIM for £11 could be a useful middle-ground option.
You get a large data allowance without taking a 12- or 24-month commitment.
Mozillion’s current 1-month plans use the EE network, so it is still important to check EE coverage in your area before switching. If you prefer pay as you go this provider has an offer
Best for: People looking for a flexible SIM with EE network access, large data allowances and EU roaming.
2. 1pMobile 30 day SIM only
1pMobile is another strong option if you want a cheap 30-day SIM only deal.
Its current 30-day bundles include:
- 5GB – £5/30 days
- 50GB – £10/30 days
- 100GB – £15/30 days
- 200GB – £20/30 days
The plans include unlimited UK calls and texts, 5G and free EU roaming.
1pMobile says its 30-day plans can be changed at any time, with no long-term commitment. This provider also offers the Best 12 Month PAYG SIM UK – Unlimited Calls & Texts for £48 otherwise for simple pay as you this sim is UK’s top offers: 1p Mobile Cashback Offers UK 2026: Get £10 Credit for Just £5
Best 1pMobile deal for most users
The 50GB plan at £10 per 30 days could be particularly attractive if 5GB is not enough but you don’t want to pay £15 or more every month.
The provider also offers 100GB for £15 and 200GB for £20, giving heavier data users more choice.
For people who travel in Europe, EU roaming is another useful feature, although roaming fair-use limits apply.
Best for: Users who want a low-cost 30-day SIM with generous data and EU roaming.
3. VOXI 30 day SIM only
VOXI is another option worth considering if you want a 30-day rolling SIM only deal, particularly if you use social media frequently.
VOXI currently advertises:
£10 plan
- 60GB data
- Unlimited social media
- Unlimited calls and texts
- Rolling 30-day subscription
- Cancel anytime
£15 plan
- 140GB data
- Unlimited social media
- Unlimited music and video
- Unlimited calls and texts
- Rolling 30-day subscription
- Cancel anytime
The current extra-data promotion is advertised as running until 30 September 2026, after which the allowances are due to revert to the standard amounts.
This makes it important to check the current offer before ordering.
Best for: Social media, music and video users who want a flexible 30-day SIM.
Which 1 month rolling SIM only deal is best?
The right deal depends mainly on how much data you use.
Best cheap 1 month SIM: Mozillion 3GB – £5
If you don’t use much mobile data, Mozillion’s 3GB plan costs £5 per month and includes unlimited calls and texts.
Best value for 30GB: Mozillion – £9
The 30GB Mozillion plan for £9/month is an interesting option for users who want considerably more data without spending £10 or more.
Best large-data option: Mozillion 80GB – £11
For users who need lots of data, the 80GB plan at £11/month offers a substantial allowance while remaining on a rolling monthly arrangement.
Best 30-day alternative: 1pMobile 50GB – £10
The 1pMobile 50GB plan at £10 per 30 days is another strong option, particularly if 50GB is enough for your normal usage.
Best for social media: VOXI
VOXI can make sense if you regularly use supported social media, music and video services because its plans include specific unlimited-data benefits for selected apps.
What is a 1 month rolling SIM only contract?
A 1 month rolling SIM only contract is a mobile plan where you pay for your SIM service on a monthly or 30-day basis rather than signing up for a long 12- or 24-month commitment.
You normally keep your existing phone and simply put the new SIM into it, provided the phone is compatible with the network.
The main attraction is flexibility.
For example, you might choose a rolling SIM if:
- You are unhappy with your current mobile provider.
- You want to test another network.
- You need a SIM temporarily.
- You don’t want a 12- or 24-month contract.
- Your data requirements change frequently.
- You want to switch to a cheaper deal later.
Is a 1 month rolling SIM the same as pay as you go?
Not necessarily.
A 1 month rolling SIM normally provides a monthly or 30-day bundle of data, calls and texts that renews automatically.
Traditional pay as you go generally allows you to add credit and pay for individual usage or purchase optional bundles.
However, some providers combine PAYG-style flexibility with 30-day bundles, so the distinction can sometimes become blurred.
Always check how the provider charges you when your bundle expires and whether automatic renewal is enabled.
Do 1 month SIM only deals require a credit check?
It depends on the provider.
Some flexible SIM providers advertise no credit check, while others may have different requirements.
For example, Mozillion states that its SIM-only plans do not require a credit check.
If avoiding a credit check is important to you, check the provider’s current terms before ordering rather than assuming every rolling SIM is credit-check free.
Can I get EU roaming with a 1 month SIM?
Yes, some UK rolling SIMs still include EU roaming, but the rules and allowances differ between providers.
Mozillion currently includes EU roaming with its listed SIM plans, while 1pMobile also includes EU roaming on its 30-day bundles.
Roaming allowances can be subject to fair-use limits, so check the provider’s current roaming terms if you regularly travel outside the UK.
What should you check before buying a rolling SIM?
Price isn’t the only thing to consider.
1. Network coverage
Check which underlying network the provider uses and whether you get good coverage where you live, work and travel.
A cheap SIM is not good value if the signal is poor in the places you need it.
2. Data allowance
Don’t automatically choose the biggest data package.
If you normally use less than 10GB, paying extra for 100GB may not be worthwhile.
3. EU roaming
If you travel to Europe, check whether roaming is included and how much data you can use abroad.
4. 5G availability
Check whether 5G is included and whether your phone supports the required 5G bands.
5. Cancellation rules
“1 month rolling” does not necessarily mean you can stop paying immediately.
Check the provider’s cancellation and notice requirements before signing up.
Are 1 month rolling SIM only deals worth it?
For many people, yes.
The biggest advantage is flexibility. You can avoid being locked into a long contract while still receiving a monthly allowance of calls, texts and data.
They can also be useful when you’re unsure which network works best in your area.
However, a 12- or 24-month deal may sometimes offer a lower effective monthly price. If you know that you will stay with the same provider for a long time, compare the total cost before making a decision.
Our pick: best 1 month rolling SIM only UK deal
For a combination of flexibility, data and price, Mozillion’s 80GB 1-month plan at £11/month is one of the most interesting deals in this comparison.
If you need less data, its 30GB plan at £9/month is worth considering.
For another EE-network option, 1pMobile’s 50GB plan at £10 per 30 days is also competitive.
Meanwhile, VOXI is worth a look if your mobile usage is heavily focused on supported social media, music and video apps.
Before purchasing, check the latest price, data allowance, roaming conditions and coverage directly with the provider because mobile offers can change.
Frequently asked questions
What is the cheapest 1 month rolling SIM only deal?
Among the plans compared here, Mozillion and 1pMobile both have options at £5, although their data allowances differ. Mozillion currently offers 3GB for £5/month, while 1pMobile offers 5GB for £5 per 30 days.
Which 1 month SIM has the most data?
Among the plans featured in this article, Mozillion offers unlimited data for £25/month on a 1-month plan. 1pMobile currently offers 200GB for £20 per 30 days.
Can I keep my existing mobile number?
Yes. Most UK mobile providers allow you to transfer an existing number when switching networks. You normally need a PAC code from your current provider.
Can I cancel a rolling SIM at any time?
The answer depends on the provider’s terms. Some providers advertise cancellation at any time, but notice periods can apply. Always check the specific provider’s cancellation conditions.
Are rolling SIMs better than 24-month contracts?
Not necessarily. Rolling SIMs offer greater flexibility, while longer contracts can sometimes offer a lower effective monthly cost. Compare the total price and the flexibility you need.
Do rolling SIMs work with unlocked phones?
Generally, yes, provided the phone is compatible with the provider’s network and technology. If your phone is locked to another network, you may need to unlock it first.
Which is better, Mozillion or 1pMobile?
Mozillion is particularly attractive for people wanting an EE-network SIM with options such as 30GB for £9 or 80GB for £11. 1pMobile offers 50GB for £10, 100GB for £15 and 200GB for £20 on 30-day plans. Your choice should depend on data usage, coverage and the features you value.
Do 1 month SIM only deals include 5G?
Many do. For example, 1pMobile currently includes 5G on its 30-day plans, while Mozillion also advertises 5G on its SIM plans. Check the individual plan before purchasing.
Final thoughts
A 1 month rolling SIM only UK plan can be a smart choice if you want to reduce your mobile bill without committing to a long contract.
For light users, a £5 plan may be enough. For heavier users, deals such as Mozillion’s 80GB £11 plan or 1pMobile’s 100GB £15 plan provide considerably more data.
If you’re looking for a flexible SIM with social-media benefits, VOXI is another option to compare.
Prices and allowances can change, so always check the provider’s latest terms before signing up.
