A Uki Mobile travel eSIM for the United Kingdom starts at $4.00 for 1 GB over 7 days. It uses the Uki Mobile network at 4G speed and covers the United Kingdom. Plans are valid for 7, 15, or 30 days, though some Uki Mobile+ plans run 3 days; that variant bundles SMS and minutes with data from $5.00. Data-only options include 2 GB / 15 days for $7.00, 3 GB / 30 days for $8.10, 5 GB / 30 days for $11.70, 10 GB / 30 days for $17.10, and 20 GB / 30 days for $26.35. The 3 GB plan is the value pick at a full month for $4.10 more than the 7-day plan. Unlimited plans are listed separately from $10.35 for 3 days. Install via QR code before you fly.
Key facts
| Country | United Kingdom |
| Network | Uki Mobile (data) and Uki Mobile+ (data, SMS, minutes) |
| Speed | 4G (published on the product page; subject to carrier Fair Usage Policy) |
| From | $4.00 for 1 GB / 7 days (data only) |
| Validity | 7, 15, or 30 days (some Uki Mobile+ plans run 3 days) |
| Install | QR code, before you fly |
What a Uki Mobile eSIM costs
The cheapest published plan on the United Kingdom travel eSIM is $4.00 for 1 GB valid 7 days. On the data-only Uki Mobile line, a 2 GB / 15 day plan is $7.00, a 3 GB / 30 day plan is $8.10, a 5 GB / 30 day plan is $11.70, 10 GB over 30 days is $17.10, and 20 GB over 30 days is $26.35. The 3 GB plan is the value pick: a full month for $4.10 more than the 7 day plan. Per gigabyte the curve improves to about $1.32 on the 20 GB bucket.
Network
The plan is sold under the operator name Uki Mobile, with a second variant called Uki Mobile+ that adds SMS and call minutes to the same data allowance. The product page publishes the speed as 4G, and real speed still depends on the mast, the handset, and the carrier Fair Usage Policy. United Kingdom is covered as one country on this plan, which means England, Scotland, Wales and Northern Ireland, with dense coverage in London and the other cities and thinner service in the Highlands, the Pennines and parts of mid-Wales. Two things to plan around. This is a UK plan, so the Isle of Man and the Channel Islands are outside it: they are Crown Dependencies and not part of the United Kingdom, so a ferry to Douglas or a hop to Jersey needs its own plan. And it does not cover the Republic of Ireland, so a Dublin trip needs a separate eSIM even though the border is open.
What the Uki Mobile+ variant adds
The data-only Uki Mobile plans have no calls or SMS, which is normal for a travel eSIM. The Uki Mobile+ plans are the exception on this product: they pair a data bucket with a set number of SMS and minutes. The entry plan is $5.00 for 1 GB with 10 SMS and 10 minutes over 7 days, and the tiers rise through 2 GB with 20 SMS and 20 minutes for $7.20 over 15 days, 3 GB with 30 SMS and 30 minutes for $12.15 over 30 days, 5 GB with 50 SMS and 50 minutes for $13.95 over 30 days, 10 GB with 100 SMS and 100 minutes for $19.98 over 30 days, 20 GB with 200 SMS and 200 minutes for $32.73 over 30 days, and up to 50 GB with 500 SMS and 500 minutes for $45.90 over 30 days. The middle tiers are also sold for shorter trips: 3 GB is $9.00 over 3 days and $10.80 over 7 days, 5 GB is $12.60 over 7 days and $13.50 over 15 days, and 10 GB is $18.28 over 7 days and $19.13 over 15 days, and 20 GB is $31.03 over 15 days. The 30 day price is the best value on every tier. If all you need is data and you will use WhatsApp for calls, the plain Uki Mobile plans are cheaper: 5 GB over 30 days is $11.70 there against $13.95 here.
How much data you actually need
Maps, chat, and rail tickets sit inside 1 GB for a short city break. A week moving between London, Edinburgh and the Lakes with daily photo uploads is the 3 GB or 5 GB plan, and a month of travel or hotspotting is 10 GB or 20 GB. Hotel and cafe Wi-Fi is widely available, so the larger buckets are mainly about train days, hotspotting and video.
Unlimited data
Unlimited plans are listed on the same product page, from $10.35 for 3 days, $16.65 for 5 days, $22.95 for 7 days, $29.33 for 10 days, $40.80 for 15 days and $58.65 for 30 days. Compare them against the buckets before buying: 20 GB over 30 days costs $26.35, which is less than the 10 day unlimited plan, and 10 GB over 30 days at $17.10 is cheaper than 7 days of unlimited at $22.95. Unlimited still sits under a Fair Usage Policy, so a hotspot left running all day is exactly what gets slowed.
Dual SIM
Keep your home SIM for calls and bank texts, or take a Uki Mobile+ plan if you want a UK number for calls. Turn on data roaming only for the Uki Mobile line. iPhone: Settings, Mobile Data, pick the travel line. Android: Settings, Network, SIMs, set mobile data to the travel eSIM. Do this before you leave the airport Wi-Fi.
Arrival and transit
The main gateways are London Heathrow (LHR), Gatwick (LGW), Manchester (MAN) and Edinburgh (EDI), with the Eurostar and the Channel ports handling arrivals from Europe. Install the eSIM on hotel or home Wi-Fi before the flight, then switch the data line on after you clear arrivals. You do not need a local shop or a passport photo for this plan.
Install
- Buy the plan and open the QR code in the order email while you still have Wi-Fi.
- On the phone, add an eSIM and scan that code. Label the line “UK”.
- After landing, set mobile data to that line and leave your home number on for texts.
Phone compatibility
The phone must be carrier-unlocked and eSIM-capable. iPhone XS and later, and recent Samsung Galaxy and Google Pixel models, qualify. A locked handset will not take the QR code. Check the lock status with your home carrier before you pay.
FAQ
Q1: How much is the cheapest United Kingdom eSIM?
$4.00 for 1 GB, valid 7 days, on the Uki Mobile plan.
Q2: Which operator is on the plan?
Uki Mobile for data, and Uki Mobile+ for the variants that add SMS and minutes.
Q3: Does it include calls and SMS?
The plain Uki Mobile plans are data only. The Uki Mobile+ plans do include SMS and minutes, starting at $5.00 for 1 GB with 10 SMS and 10 minutes.
Q4: Is it 5G?
No. The product page lists the speed as 4G. Real speed still depends on coverage and the Fair Usage Policy.
Q5: Can I install it after I land?
Yes, if you can reach Wi-Fi. Installing before the flight is simpler, because the QR download needs a connection.
Q6: Will it work outside the United Kingdom?
No. The Republic of Ireland needs its own plan, and the Isle of Man and the Channel Islands are Crown Dependencies outside the UK, so they need separate plans too.
Q7: Is there an unlimited option?
Yes. Unlimited plans are listed separately on the same product page, from $10.35 for 3 days.
Q8: Can I share it as a hotspot?
Yes, within the data allowance. Hotspot traffic counts against the same gigabytes, and heavy sharing can hit the Fair Usage Policy.
Q9: Which plan is the best value?
For data only, 3 GB over 30 days at $8.10. If you want a UK number as well, the Uki Mobile+ 5 GB tier at $13.95 over 30 days is only $1.80 more than the 3 GB tier at $12.15, and it carries 20 more SMS and minutes.
Q10: When were these prices checked?
October 2026, against the published variation prices on travelydata.com.
Bottom line
For a week in the UK, the $4.00 / 1 GB Uki Mobile plan is the entry point, and the 3 GB / 30 day plan at $8.10 is the one most travellers should buy. A travelling month is 10 GB or 20 GB, unlimited starts at $10.35 for 3 days, and the Uki Mobile+ tiers add SMS and minutes if you want a UK number: 5 GB with 50 SMS and 50 minutes is $13.95 over 30 days. The published speed is 4G and the buckets beat unlimited here.
Prices and coverage verified on travelydata.com, October 2026.
