Kent town with management team providing promotional material (8,5)
I believe the answer is:
sandwich board
'promotional material' is the definition.
(type of advertisement)
'kent town with management team' is the wordplay.
'kent town' becomes 'sandwich' (town in Kent).
'with' is a charade indicator (letters next to each other).
'management team' becomes 'board' (the board of an organisation or business).
'sandwich'+'board'='SANDWICH BOARD'
'providing' is the link.
(Other definitions for sandwich board that I've seen before include "Mobile advertising carrier" , "Display ads carried on the shoulders by a walker" , "Advertisement carried up and down the street" , "Advertisement carried on the person" , "something used for advertising" .)