Some beaut shots there chaps!
The roundels on the MkXIV are actually SEAC (RAF) roundels, not Royal Indian Air Force, and the aircraft is in the scheme used in Burma, towards the end of WW2.
Waynos, the internal armoured windscreen was fitted to aircraft from roughly the mid-production of the MkV. There are still a number of Spits around with the earlier external screen, though only,AFAIK, about four flying. During the making of the BoB movie, in 1968, those aircraft used that had the external screen, were modified to internal, to look more like the majority of aircraft gathered for the movie, i.e. MksIX and XVI predominantly.