Witness Her Majesty supporting Times point of view (9)
I believe the answer is:
bystander
'witness' is the definition.
(bystander is a kind of witness)
'her majesty supporting times point of view' is the wordplay.
'her majesty' becomes 'er' (Elizabeth Regina).
'supporting' means one lot of letters go next to another (in a down clue, some letters go below others).
'times' becomes 'by' (I've seen this in other clues).
'point of view' becomes 'stand' ('stand' can be a synonym of 'point of view').
'by'+'stand'='bystand'
'er' after 'bystand' is 'BYSTANDER'.
(Other definitions for bystander that I've seen before include "Non-partcipating spectator" , "Non-participant spectator" , "Onlooker (often innocent)" , "Watcher of occurrence" , "Bad sentry may be an onlooker" .)