Papers seized by gang in part of Yorkshire (6)
I believe the answer is:
riding
'part of yorkshire' is the definition.
(I've seen this before)
'papers seized by gang' is the wordplay.
'papers' becomes 'id' (identification papers).
'seized by' indicates putting letters inside.
'gang' becomes 'ring' ('ring' can be a synonym of 'gang').
'id' going within 'ring' is 'RIDING'.
'in' is the link.
(Other definitions for riding that I've seen before include "Establishment teaching equestrian skills" , "Establishment teaching horsemanship" , "being carried" , "On a bay, perhaps" , "Division of Yorkshire" .)