Roddy woomble from Idlewild has done an album pretty much every year, in various guises, some of which are awesome.
Beta Band (minus Steve Mason) morphed into the Aliens and made two of the best albums of the 2000s. The little brother of one of them formed Django Django, and you can hear the synergies.
Gomez were successful in the States and have done 5 or 6 albums since the heady days of Get Myself Arrested.
No idea about Mansun but I think they’re still banned from Liverpool Street Station.