Found some more on your pilot : H. J. Fitz 564624 January  1931 arrived at RAF Cranwell as the 3D (23rd)  Entry  to train as Instrument Makers or Wireless Operator Mechanics. 
Pass Out in December 1933. Force landing of Whitley  P4971 23 June 1940  Shire Bridge Farm NG23 5EA Long Bennington. The  Pilot was Sgt H. J.  Fitz 564624. The official cause was engine failure  and unable to reach  aerodrome due to low clouds & inability to climb  on one engine. Sgt  H. J. Fitz was uninjured. Those 2 entries are the same service number  but when I did a google search of his name this also came up. 12th March  1953 two routine NATO liaison sorties Lincoln  ‘C’ (RF531) captained by  FS TJ Dunnell with Sqn Ldr H J Fitz, the new  CO of 3 Sqn along for a  familiarisation sortie as co-pilot. At 13.20hrs,  as the aircraft was  entering the 20-mile wide air corridor from Hamburg  to Berlin, it was  attacked by 2 MIG 15’s that opened fire without  warning. The Lincoln  went down in a steep dive, followed by the MIG’s  who continued to pour  fire into the crippled aircraft. The aircraft’s  starboard wing caught  fire and it began to break up in mid-air. The main  body of the aircraft  crashed into a wood near Bolzenburg, 3 miles  inside the Russian Zone,  with 4 of the crew still in the wreckage. The  remainder of the aircraft  fell to ground near Bleckede, on the edge of  Luneburg Heath 15 miles  SE of Hamburg, inside the British Zone. Three of  the crew managed to  bail out of the doomed plane, but one of the  parachutes failed to open.  The 2 other crewmembers landed (one in the  British Zone) but both died  of their wounds and other injuries. A number  of German eyewitnesses  confirmed that MIG’s had been responsible for  the attack on the  aircraft and suggested that one of the fighters had  also attacked the  descending parachutists – this would explain certain  features of the  medical reports on the deceased.
https://www.thegazette.co.uk/London/...35408/page/141
http://www.afm-veterans-uk.info/roll...SerialNo=R2755
https://www.thegazette.co.uk/London/.../4928/data.pdf
https://www.thegazette.co.uk/London/.../5064/data.pdf