Town with a number of sheep (5)
I believe the answer is:
lewes
'town' is the definition.
(I've seen this before)
'with a number of sheep' is the wordplay.
'with' says to put letters next to each other.
'a number of' becomes 'l' (I can't explain this - if you can you should give a lot more credence to this answer).
'sheep' becomes 'ewes' (a ewe is a female sheep).
'l'+'ewes' is 'LEWES'.
Can you help me to learn more?
(Other definitions for lewes that I've seen before include "somewhere in Sussex" , "Town near Glyndebourne" , "East fourteen Dn town" , "County town of East Sussex" , "Administrative town of East Sussex" .)