MobileSIM does not provide a truly unlimited data eSIM for the United Kingdom. The plan titled “United Kingdom Unlimited data for 10 days” actually offers 3GB of high‑speed data each day; once that threshold is reached the speed is throttled to 1000kbps. Because the data cap is specified, this plan cannot be considered unlimited in the usual sense.
If a traveler prefers a high‑data‑allowance plan without daily limits, MobileSIM offers several fixed‑data options for the UK. For example, the “United Kingdom 20 GB for 30 days” plan is priced at $32. 00 USD, and the “Europe 50 GB for 30 days” plan covers the UK as well as 41 other European countries for $80.00 USD. These fixed‑data plans may prove more cost‑effective for users who need consistent high‑speed data without the daily limit and speed reduction inherent in the “Unlimited”‑named plans.