Heard Yorkshire city guides (5)
I believe the answer is:
leads
'guides' is the definition.
('lead' can be a synonym of 'guide')
'heard yorkshire city' is the wordplay.
'heard' indicates a 'sounds like' (homophone) clue.
'yorkshire city' becomes 'leeds' (I've seen this before).
'leeds' is a homophone of 'LEADS'.
(Other definitions for leads that I've seen before include "Clues" , "Takes initiative" , "singers principally?" , "What Prime Minister does" , "Guides; wires" .)