eSimfly eSIM Data Plans for United Kingdom

eSimfly does not offer a truly unlimited data eSIM for the United Kingdom. Plans that carry the “Unlimited” name actually provide 3GB per day; after the daily quota is reached the speed is throttled to 1024 kbps. Travelers who need a large amount of high‑speed data can instead choose one of eSimfly’s fixed‑data options, such as the O2 Unlimited (UK) plan which offers 650GB for 30 days or the Vodafone Travel (UK) plan that provides 500GB for 30 days. Fixed‑data plans can be more cost‑effective unless a user is an extremely heavy data consumer.

eSimfly provides United Kingdom eSIMs that include a phone number and SMS functionality. Prices start at $17.84 USD and go up to $125.54 USD, with validity periods ranging from 15 days to 90 days. The phone numbers feature either the international dialing code +44 – which is a local UK number – or +33, which is a French number; all plans allow inbound and outbound voice calls and inbound and outbound SMS. Users should check the specific plan details with eSimfly if they need a particular dialing code or additional functionality.

eSimfly provides 35 single‑country data plans that are available specifically for the United Kingdom, while 56 multi‑country plans also include UK coverage. The single‑country plans range in price from about $1.85 to $125.54 and give data caps from 1 GB up to 650 GB, with validity periods spanning from 3 days to a full year.

Some of these plans are structured as fixed data caps—where you receive a set amount of data for the entire validity period—while others operate on a daily data cap basis, resetting the allowance each day. This dual structure allows customers to choose between a lump‑sum data bundle or a more flexible, day‑by‑day usage model.