My UK Tier 2 visa is on an expired passport, and my BRP card is tied to that visa. I am planning on traveling out of the UK soon, and I am wondering if I can use the expired passport with the valid visa, the BRP card, and a valid passport issued by a different country (from that of the expired passport) to re-enter the UK? The UKVI website seems to suggest that this is allowed in general, but there are no clarifications regarding passports from different countries (the US seems to disallow that case, for example).
I think the best idea is to phone Border Force at your UK intended airport of arrival. There are a couple of issues here: - does the change of nationality trigger the 'change of circumstances'? - does your new nationality require 'Entry Clearance' or a Visa for the airline to carry you?