A small baby's bed in Berkshire town (5)
I believe the answer is:
ascot
'berkshire town' is the definition.
(town in Berkshire)
'a small baby's bed' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'baby's bed' becomes 'cot' (cot is a kind of baby's bed).
'a'+'s'+'cot'='ASCOT'
'in' is the link.
(Other definitions for ascot that I've seen before include "Broad necktie" , "English horse racing venue on coast" , "Racecourse near Windsor" , "English town" , "Berkshire town, famous for horse racing" .)