I think this is the UK's implementation of EU PSD2 directive (e.g.
[1]) so may not survive brexit. Looking forward to what'll come out of it though!
[1] https://www.tsys.com/news-innovation/whats-new/Articles-and-...
[1] https://www.tsys.com/news-innovation/whats-new/Articles-and-...
Worth saying also; Open Banking actually came out of the UK competition marketing authority - its just become tied up with PSD2 (as its one way to achieve compliance with that legislation)