Hello Keith
As, in late 1943, 127 Squadron was operating the Hurricane IIc in the Med. area I take it you really mean 127 (RCAF) Airfield (later Wing)?
127 (RCAF) Airfield were at Lashenden from 6 to 20 August 1943, before moving to Headcorn, and then Kenley on 14 October, Tangmere on 17 April 1944 before moving to mainland Europe (B.2 Bazenville) on 16 June 1944 (source 2TAF Vol 3 - Shores & Thomas).
See also
http://www3.sympatico.ca/angels_eight/ and this link
http://www.airhistory.org.uk/spitfire/index.html will tell you everything you need to know about Spitfire production of the various marks.
403 were issued the XVI in December 1944 to July 1945 when they disbanded.
416 were issued the XVI in December 1944 to September 1945, when they changed to the XIV.
421 were issued the XVI in December 1944 to July 1945 when they disbanded.
443 were issued the XVI in January 1945 to January 1946, when they changed to the XIV. Source RAF Squadrons by W/C Jefford.
All changes were made on mainland Europe, and not during the Lashenden period
hope it helps?
Allan