Feature idea …
Not all account types you link to are covered by the FSCS scheme. Some, e.g. credit cards, it would make no sense to include, but some “current” and savings accounts are not covered (e.g. Revolut).
It would be useful to have a marker of some kind to indicate accounts whose nature is included in the FSCS scheme but which are not actually part of it.
The next step in this feature is to highlight any accounts that, together with others under the same entity, contain more than the protected £85k. This is not always obvious because institutions merge but keep names - e,g. Yorkshire and Chelsea BSs, and I guess that the protected amount is aggregated across those institutions.
Not sure if FSCS properties are in the API spec, and it would be a pain to manually maintain, but … I have the vague hope that maybe the FSCS “registration” has an identifier that could be in the API data returned and it would be consistent for entities that have a shared limit… Nah, that is far too sensible.