Don't stop performing somewhere in west London? (5)
I believe the answer is:
acton
'somewhere in west london?' is the definition.
'don't stop performing' is the wordplay.
'don't stop' becomes 'act' (I can't explain this - if you can you should believe this answer much more).
'performing' becomes 'on' (as in being on stage).
'act'+'on'='ACTON'
Can you help me to learn more?
(Other definitions for acton that I've seen before include "part of London on the tube" , "District of West London" , "English statesman" , "somewhere in London" , "London area" .)