### Clue: City in retreat — Coventry wingers showing good form (7)
### Answer: DECENCY 
 ### Explanation: Definition: good form
 [EC(abbrev. for "Eastern Central", the postal code area that includes almost all of the City of London) **contained in**(in) DEN(a retreat/one's private room)] + **1st and last letters of**(… wingers) "Coventry".