If you’ve had enough of long mobile contracts and tiny data limits, here’s the fix. These are the unlimited SIM only deals that actually make sense this October 2025.
Every plan below gives you proper unlimited data, runs on one of the big UK networks, and you can cancel anytime. No credit checks, no hoops, no catch.
Best Unlimited SIM Deals Right Now
💚 Lyca Mobile – £30 a month
Runs on EE, so coverage and 5G speeds are top-notch. You also get unlimited international minutes and roaming in 32 destinations (yes, China and India too – China capped at 5GB).
No contract, eSIM available, and you can bin it whenever you like.
32 Roaming Destinations
35GB | China 5GB
Austria
Belgium
Bulgaria
China (5GB)
Croatia
Cyprus
Czech Republic
Denmark
Estonia
Finland
France
Germany
Greece
Hungary
Iceland
India
Ireland
Italy
Latvia
Liechtenstein
Lithuania
Luxembourg
Malta
Netherlands
Norway
Poland
Portugal
Romania
Slovakia
Slovenia
Spain
Sweden
💙 Lyca Mobile – £12.50 for 30 Days then £25
First month half price – decent if you just want to try it out. 100 international minutes, EE’s network, 32 roaming countries, eSIM ready, cancel anytime.
32 Roaming Destinations
35GB | China 5GB
Austria Belgium Bulgaria China (5GB) Croatia Cyprus Czech Republic Denmark Estonia Finland France Germany Greece Hungary Iceland India Ireland Italy Latvia Liechtenstein Lithuania Luxembourg Malta Netherlands Norway Poland Portugal Romania Slovakia Slovenia Spain Sweden
💜 Smarty Unlimited – £17 a month
Probably the best value unlimited SIM right now. Uses Three’s network, no contract, no checks, and you get 45 roaming destinations. Proper unlimited 5G data without the nonsense.
45 Roaming Destinations
12GB
🇦🇽 Åland Islands
🇦🇹 Austria
🇵🇹 Azores
🇪🇸 Balearic Islands
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇨 Canary Islands
🇾🇹 Comoros & Mayotte
🇭🇷 Croatia
🇨🇾 Cyprus
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana
🇩🇪 Germany
🇬🇮 Gibraltar
🇬🇷 Greece
🇬🇵 Guadeloupe
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland
🇮🇹 Italy
🇱🇻 Latvia
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira
🇲🇹 Malta
🇲🇶 Martinique
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Réunion
🇷🇴 Romania
🇧🇱 Saint Barthélemy
🇲🇫 Saint Martin
🇸🇲 San Marino
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇸🇪 Sweden
🇻🇦 Vatican City
🧡 Voxi Unlimited – £35 a month
If you live on TikTok, Insta or YouTube, Voxi’s the one. Unlimited data, 5G speeds, Vodafone network, and it works with eSIMs. Cancel whenever you fancy.
4 Roaming Destinations
20GB
Iceland 🇮🇸
Ireland 🇮🇪
Isle of Man 🇮🇲
Norway 🇳🇴
💛 Lebara Unlimited – £15 for 3 Months then £30
Must Use code OLIMIT3 to get this price. Runs on Vodafone, gives you unlimited data and minutes, and works in the EU + India (up to 30 GB). Handy if you call abroad a lot.
for 3 Months,
37 Roaming Destinations
30GB
Austria 🇦🇹
Belgium 🇧🇪
Bulgaria 🇧🇬
Croatia 🇭🇷
Cyprus 🇨🇾
Czech Republic 🇨🇿
Denmark 🇩🇰
Estonia 🇪🇪
Finland 🇫🇮
France 🇫🇷
Germany 🇩🇪
Gibraltar 🇬🇮
Greece 🇬🇷
Guadeloupe 🇬🇵
Guyane (French Guiana) 🇬🇫
Hungary 🇭🇺
Iceland 🇮🇸
India 🇮🇳
Ireland 🇮🇪
Italy 🇮🇹
Latvia 🇱🇻
Liechtenstein 🇱🇮
Lithuania 🇱🇹
Luxembourg 🇱🇺
Malta 🇲🇹
Martinique 🇲🇶
Mayotte 🇾🇹
Netherlands 🇳🇱
Norway 🇳🇴
Poland 🇵🇱
Portugal 🇵🇹
Réunion 🇷🇪
Romania 🇷🇴
Slovakia 🇸🇰
Slovenia 🇸🇮
Spain 🇪🇸
Sweden 🇸🇪
🤎 1p Mobile Unlimited – £25 a month
Straightforward and solid on EE. Unlimited data, 46 roaming destinations, cancel anytime, no checks. Nothing fancy — just works.
46 Roaming Destinations
14GB
🇦🇹 Austria
🇵🇹 Azores (Portugal)
🇪🇸 Balearic Islands (Spain)
🇧🇪 Belgium
🇧🇬 Bulgaria
🇮🇸 Canary Islands (Spain)
🇭🇷 Croatia
🇨🇾 Cyprus (South)
🇨🇿 Czech Republic
🇩🇰 Denmark
🇪🇪 Estonia
🇫🇮 Finland
🇫🇷 France
🇬🇫 French Guiana (France – overseas)
🇩🇪 Germany
🇬🇮 Gibraltar
🇬🇷 Greece
🇬🇵 Guadeloupe (France – overseas)
🇬🇬 Guernsey
🇭🇺 Hungary
🇮🇸 Iceland
🇮🇪 Ireland (Republic)
🇮🇲 Isle of Man
🇮🇹 Italy
🇯🇪 Jersey
🇱🇻 Latvia
🇱🇮 Liechtenstein
🇱🇹 Lithuania
🇱🇺 Luxembourg
🇵🇹 Madeira (Portugal)
🇲🇹 Malta
🇲🇶 Martinique (France – overseas)
🇲🇨 Monaco
🇳🇱 Netherlands
🇳🇴 Norway
🇵🇱 Poland
🇵🇹 Portugal
🇷🇪 Reunion Island (France – overseas)
🇷🇴 Romania
🇸🇲 San Marino
🇸🇰 Slovakia
🇸🇮 Slovenia
🇪🇸 Spain
🇸🇪 Sweden
🇨🇭 Switzerland
🇻🇦 Vatican City
What’s Worth Your Money
If you want the cheapest all-rounder, go for Smarty £17.
Need EE coverage or eSIM? Lyca or 1p Mobile will do it.
Travel a lot or call abroad? Lebara gives you the best roaming deal.
All of them are month-to-month, 5G-ready, and you can walk away anytime.
Quick Reasons to Switch Now
- No contracts or credit checks
- Unlimited data on 5G
- eSIM ready for instant setup
- Free roaming options
- Cancel anytime
Basically: pay only for the months you actually use it.
Final Word
Unlimited data shouldn’t lock you in. These SIMs give you real flexibility — the freedom to switch, pause, or cancel whenever life changes.
All prices here are live for October 2025, so if you’re thinking about changing networks or going unlimited, now’s the time.
👉 Compare and grab your deal today at Olimit.co.uk.
