Store providing new hats at Ponders End (5)
I believe the answer is:
stash
'store' is the definition.
(stash is a kind of store)
'new hats at ponders end' is the wordplay.
'new' indicates an anagram.
'at' is a charade indicator (letters next to each other) (I've seen this in other clues).
'end' suggests the final letters.
The last letter of 'ponders' is 's'.
'hats' with letters rearranged gives 'tash'.
'tash' put after 's' is 'STASH'.
'providing' is the link.
(Other definitions for stash that I've seen before include "Secret store of valuables" , "Consignment of drugs" , "drug store" , "Stow away" , "Hide in a secret place" .)