SeferESIM does not have a truly unlimited high‑speed data eSIM for the United Kingdom. The plans that carry the “Unlimited” label provide 1 GB of data per day, after which the speed is throttled to 512 kbps. These plans are technically fixed‑data plans with a daily quota rather than an unlimited allowance.
If a higher data volume is desired, SeferESIM offers fixed data plans for the United Kingdom such as 50 GB for 30 days at $34.00 USD, 50 GB for 180 days at $56.00 USD, and 100 GB for 180 days at $136.66 USD. These plans give a larger hard data cap and can be more cost‑effective for travelers who need more data than the daily‑quota “Unlimited” option provides.