First I'd like to raise the question of "Series 1" and "Series 2". I have never seen this designation used in any official documentation and wonder if it is a term used by Hawker only (as it seems to originate in Frank Mason's works). Secondly, what exactly does it mean? The change from long to short barrelled cannon hardly seems a worthy factor for designation. Sure, the early Mk.Vs had a number of differences from later aircraft - rear fuselage joints with Typhoon Mod 286 'fishplates', ex-Typhoon (I believe) forward fuselage framework which resulted in a small fairing visible on the Tempest wing root, lack of provision for drop tanks, and lack of spring tabs. I doubt if all these were present after any one common airframe on the production line that warranted a change from Series 1 to 2.
I recently saw a note from a meeting on 1 March 1944 wheen the 11 Group rep stated that the first 50 Tempests off the production line would not have the facility for drop tanks.
Anyway, I have looked at the detailed 'history' (namely the Form 78s) of the first 50 production Tempest Vs (JN729 to JN796) to see if there are any commom themes or any sign of allocation to Gloster or storage...
22 were lost in accidents or as a result of operations with RAF squadrons.
10 ended up in storage with 20 MU Aston Down and were subsequently sold back to Hawker in 1950 (presumably for spares retrieval).
6 were in store with 5 or 51 MUs and were scrapped.
4 were lost in accidents or scrapped with Hawker or Napier
4 were scrapped at A&AEE/ETPS
3 became instructional airframes
1 scrapped at 287 Sqn cnk
Perhaps the most significant theme to show up on these histories is that of these 50 aircraft, after their initial operational service, no less than 14 were issued to 287 Sqn - an anti-aircraft cooperation unit. JN797 was also issued to 287, so what ever defined these first 50 aircraft probably extended to the 51st at least. None of these 51 aircraft were issued to front-line units after October 1944.
It is also worth noting that JN798, 799 and 800 were all used by Hawker or A&AEE (which also suggests significant change at this point) and after that JN801 onwards were issued to operational units and some continued in use until VE day and beyond.