That would be XA847, the first prototype P 1B Lightning, first flown by Roland Beamont on 4 April 1957. It had a plate on the port side recording that it was the first British aircraft to fly at Mach 2, on 25 November 1958. The last I heard it was stored dismantled on a farm, perhaps the property of the Mr Howell, you mention. I am certain that a UK Forum member will be able to help you with this, so I will retire gracefully now!

XA899 was apparently the first four-engined aircraft to make a fully automatic landing, on 22 December 1959 (3 months after I joined the RAF).

Hej Daniel!
Kunde jag vänta inbjudan till din jubileumsfest då (som officiell bildplåtare kanske)!?
Hälsningar och grattis i förväg, Peter den fräckis

I plead guilty to putting (old) pennies on the rail, 50 years ago, on the shed tracks at the north end of Grantham station, but I was probably more a danger to myself than anyone else!

I fail to understand how a plastic bag is going to stop a lithium battery overheating and setting your pocket on fire! (I often keep a spare camera battery in my pocket).
It sounds to me like an extension of the knee-jerk and ineffective, even nonsensical, security rules enforced by mindless, underpaid “security officers”.
Rant over by someone who was a very frequent flyer before 9/11 and now prefers avoid commercial flights if at all possible, thanks to the airport hassles!

Hi Daniel!
The last I heard was that he’s trying to figure out how to put all the pieces together! I must go down and see how he’s getting on, and take some photos of the “jigsaw puzzle”.

I thought at first you were referring to the Gillette Falcon (L9705), due to the M.52 reference, but apparently not. I suppose you have the Miles web site information:

Falcon Six M. 3B(F) 269 G-AEAO R4071 Extant Lognes France 1971 G-AGZX PH-EAO OO-FLY F-BBCN
Known History: The CoA was issued to T. Rose, Woodley on the 18 January 1936; To Holland: PH-EAO in March 1936; Restored to Miles Aicraft Ltd in June 1939; To RAE, Farnborough as R4071 (may have been with the RAE as early as 1937 for tests with spoilers).; In January 1946 restored to Southern Aircraft (Gatwick) Ltd. as G-AGZX; In December 1946 to Belgium as OO-FLY; Later to France as F-BBCN; Noted extant at Lognes in 1971; Nothing heard since, but airframe may still be in existence.