Exclusive shop at Ponders End (5)
I believe the answer is:
scoop
'exclusive' is the definition.
(as in a newspaper scoop)
'shop at ponders end' is the wordplay.
'shop' becomes 'coop' (short for The Co-operative Group).
'at' says to put letters next to each other (I've seen this in other clues).
'end' indicates one should take the final letters.
The final letter of 'ponders' is 's'.
'coop' after 's' is 'SCOOP'.
(Other definitions for scoop that I've seen before include "Dig out - story that makes the headlines" , "Press exclusive" , "Large ladle" , "Piece of news that no-one else has" , "Ice-cream utensil" .)