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United Kingdom eSIM Plans
29 plans · from $2.44
The UK has a fast-growing 5G network across major cities. eSIM is ideal for UK trips — no passport verification needed and you can activate before departure. Learn more about how eSIMs work →
→Read our UK eSIM guide — EE vs O2 vs Vodafone, London Underground coverage, and EU roaming explainedChoose a data plan
1 GB
7 days· 0.6 GB per $1
$2.44
★ BEST VALUE
Unlimited
1 days· ∞ GB per $1
$2.95
2 GB
15 days· 0.7 GB per $1
$3.64
3 GB
30 days· 0.8 GB per $1
$4.63
Unlimited
3 days· ∞ GB per $1
$6.40
5 GB
30 days· 0.9 GB per $1
$6.93
Unlimited
5 days· ∞ GB per $1
$9.86
10 GB
30 days· 1.0 GB per $1
$11.74
Unlimited
7 days· ∞ GB per $1
$13.31
Unlimited
10 days· ∞ GB per $1
$18.49
20 GB
30 days· 1.1 GB per $1
$20.21
Unlimited
15 days· ∞ GB per $1
$27.11
50 GB
30 days· 1.3 GB per $1
$44.36
Unlimited
30 days· ∞ GB per $1
$53.01
100 GB
30 days· 1.3 GB per $1
$86.12
Frequently asked questions
Do I need a physical SIM card to use mobile data in United Kingdom?
No. A Siima eSIM gives you local data in United Kingdom without a physical card. Activate by scanning a QR code in your phone's settings — no shop visit, no passport check required.
How do I activate my eSIM when I arrive in United Kingdom?
Install the eSIM before you travel: open Settings → Cellular → Add eSIM and scan the QR code from your Siima confirmation email. Your data activates automatically when you first use mobile data in United Kingdom.
How much data do I need for a trip to United Kingdom?
For light use (maps, messaging, email) 1–3 GB per week is usually enough. For streaming or heavy navigation, choose a 5 GB+ plan. You can buy additional plans at any time if you run low.
Is eSIM cheaper than international roaming in United Kingdom?
Almost always yes. International roaming from most home carriers costs $10–15 per day. Siima eSIM plans for United Kingdom start from $2.44 and cover days or weeks of local data.