eSIM Cards does not provide a plan that offers truly unlimited high‑speed data for the United Kingdom. All of the United Kingdom plan options that appear under the “Unlimited” label have a fixed data allowance – the highest being 1 024GB and the lowest 750GB – after which speed is typically reduced. These so‑called unlimited plans therefore provide high‑speed data only up to the stated cap.
Travelers who need a large amount of data at a predictable cost can choose from these fixed‑data options. For example, the UK EE Unlimited for 30 days plan offers 750GB of data for $29.54 USD, while the UK Three Unlimited for 30 days plan provides 1 024GB for $32.17 USD. Although they are labeled “Unlimited, ” the data is capped and speed may be throttled once the limit is reached. Choosing a fixed‑data plan provides clarity on the cost and consumption limits and may be more cost‑effective for most users.