The buses that London sold to Malta are unfortunately, no longer in Malta.
All 80 Mercedes buses have been exported to Sudan after they caused congestion, caught fire and were generally disliked, it seems.
Indeed, the article notes, in addition to the fires:
In offering the buses for sale, Transport Malta had laid down that
they cannot be returned to Malta’s roads, because of the congestion
None of the bendy buses operate any longer in London, however they were moved around the UK in addition to Malta:
Withdrawn buses have found their way to other parts of the UK. Some
went to Arriva Midlands in Leicester and Arriva North West in
Liverpool. Go-Ahead Group transferred some to their Brighton & Hove,
Go North East, Southern Vectis and Wilts & Dorset operations. Some
were sold to CT Plus, Bristol and McGill's Bus Services, Glasgow
And indeed, the Wiki article on their use in the UK shows that they're still operating in Cardiff, among other places.