In Wales, not the place for top people? (5)
I believe the answer is:
neath
If this is the answer I cannot explain how the clue works.
Can you help me to learn more?
(Other definitions for neath that I've seen before include "Welsh industrial town" , "Welsh team" , "Lower than - a town in West Glamorgan" , "Town near Swansea" , "Under, poetically" .)