Game plan is not working in Midlands town (10,3)
I believe the answer is:
leamington spa
'midlands town' is the definition.
(I've seen this before)
'game plan is not working' is the wordplay.
'working' is an anagram indicator.
'game'+'plan'+'is'+'not'='gameplanisnot'
'gameplanisnot' is an anagram of 'LEAMINGTON SPA'.
'in' acts as a link.
(Other definitions for leamington spa that I've seen before include "W. Midlands resort" , "West Midlands health resort" , "Town near Warwick" , "Laminates pong (Anag)" , "Genial postman (anag) - Midlands town" .)