Nope, it is FCA/Prudential registered bank. These fintech solutions are very common in the UK.

I’ve discovered I can access my account online, but cannot send money from there (Zopa).

Monzo and Revolut now have some barebones web implimentation (over a decade after launched).

Atom has no web access at all.

Chase UK doesn’t have web access as far as I can tell.

All of the above are registered banks.