Originally Posted by
B747-437B
I assume your removal from the UK occurred prior to Latvia's admission to the EU?
You should have no problems in this case, UNLESS you have specifically received a notice of exclusion from the UK (highly unlikely) for reasons of public safety/security.
I believe that's correct.
The OP will not get to a UK Border Agency desk on his journey, so his only risk is being refused embarkation at RIX (or wherever he boards). It is worth checking with a British embassy for peace of mind.