Woman keeping record in regimental HQ (5)
I believe the answer is:
depot
'regimental hq' is the definition.
(headquarters)
'woman keeping record' is the wordplay.
'woman' becomes 'dot' ().
'keeping' indicates putting letters inside (some letters kept inside).
'record' becomes 'EP' (abbreviation for extended play record).
'dot' going around 'ep' is 'DEPOT'.
'in' acts as a link.
(Other definitions for depot that I've seen before include "Storehouse, repository" , "Storehouse or main bus station (5)" , "Supply base" , "Headquarters - storehouse" , "Bus station in the US" .)