Bags pics heading north carrying old bishop (8)
I believe the answer is:
sporrans
'bags' is the definition.
(sporran is a kind of bag)
'pics heading north carrying old bishop' is the wordplay.
'pics' becomes 'snaps' (short for pictures).
'heading north' is a reversal indicator.
'carrying' is an insertion indicator.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'bishop' becomes 'rr' (abbreviation for Right Reverend).
'snaps' reversed gives 'spans'.
'o'+'rr'='orr'
'spans' enclosing 'orr' is 'SPORRANS'.
(Another definition for sporrans that I've seen is " Pouches worn on kilts".)