Two-year phone contracts made sense when handsets were the main reason to sign up. Today many people keep their phone for longer and simply want a monthly allowance that fits the way they live. A 30 day SIM only plan gives you exactly that: a set amount of data, calls and texts for 30 days, with the freedom to change plan or leave whenever your needs change.
This guide walks through five no-contract plans, from a light 5GB allowance to unlimited data, so you can see which one fits your month.
Why a 30 Day Plan Works for So Many People
There is no credit check and no long commitment. You pay for 30 days at a time, and at the end of the period you can renew the same plan, move up when you need more data or move down during a quieter month. That flexibility suits students, people new to the UK, frequent travellers and anyone who simply does not want to be tied into a contract. Every plan in this range also includes 100 international minutes and EU roaming, so the plan keeps working on holiday.
Several tiers currently carry a first-month discount, which makes it easy to try a SIM only plan with no contract before settling on the allowance that suits you.

Five Plans, Every Allowance
UK Plan Smart, 5GB
The lightest plan pairs 5GB of data with 1,000 UK minutes and texts and 100 international minutes. All 5GB can be used in the EU too. It lists at £5 per 30 days and is currently £3.50 for the first month. It is a good fit for someone who mainly messages, browses and uses maps, or as a second line for a tablet or work phone.
National Plus, 30GB
National Plus steps up to 30GB of data with unlimited UK calls and texts and 100 international minutes, plus up to 12GB of EU roaming. It lists at £10 per 30 days and is currently £5 for the first month. For most people who stream music on the commute and use social apps throughout the day, this is the sweet spot.
UK Plan Super Extra, 75GB
With 75GB of data, unlimited UK calls and texts and 100 international minutes, Super Extra is built for heavy streamers and anyone who uses their phone as a hotspot. Roaming covers the EU and India with a 12GB cap. It lists at £15 per 30 days and is currently £7.50 for the first month.
UK Plan Mega Plus, 120GB
Mega Plus delivers 120GB of data with unlimited UK calls and texts and 100 international minutes, and the same 12GB EU and India roaming allowance. It lists at £20 per 30 days and is currently £10 for the first month, ideal for a household that shares one hotspot or a user who watches a lot of video on the go.
UK Plan Unlimited
The top tier offers unlimited data, unlimited UK calls and texts and 100 international minutes, with the largest roaming allowance in the range at 35GB in the EU and India. It lists at £25 per 30 days and is currently £12.50 for the first month. Choose it if you never want to check your data balance again.
Quick Pick Guide
Still deciding? Match your habits to one of these no contract SIM deals in seconds:
- Light user or second line: UK Plan Smart, 5GB
- Everyday streaming and social media: National Plus, 30GB
- Hotspot and heavy streaming: UK Plan Super Extra, 75GB
- Shared hotspot or lots of video: UK Plan Mega Plus, 120GB
- No limits at all: UK Plan Unlimited
Common Questions
What happens after 30 days? You can renew the same plan, switch to a bigger or smaller allowance, or stop. There is no contract to cancel.
Does the first-month price last? No. The discounted price applies to the first month only, after which the plan renews at its standard price.
Can I keep my number? Yes. Ask your current provider for your PAC code and request a number transfer when you order your SIM.
Is eSIM available? eSIM is offered on these plans, so compatible phones can get connected without waiting for a physical SIM.
The Takeaway
From 5GB for light users to unlimited data for heavy streamers, there is a 30 day allowance for every kind of month, and you are never locked in. Start with the plan that matches your usage today and adjust as you go with a flexible pay as you go SIM plan.
All five plans are available from Lyca Mobile. Heading somewhere soon? Find holiday ideas, packing tips and destination guides over at HolidayzGuide.
