Evenin'. Jon popped up on Twitter wanting to share pictures from this fine album (via his Grandfather's cousin) of RRs, Lanchesters, Pith helmets etc. I suggested they might go down quite well here, so he's kindly encouraged the sharing, and says will join with more later. Personally, I think they're crackers: 1. 2. 3. 4. 5. 6.
The car captioned as 'Lanchester' carries the name 'HMAC Bisley' and it does look remarkably like the Crossley at Bovington. Were they re-chassied ? Motorycycle is a BSA War Office V-twin. British WW1 Crossley Mark 1 Armoured Car at Bovington Tank Museum
Sadly Bovington's vehicle info pages seem to be a bit of a mess at the moment. Hopefully just some work going on. Looking on the Mushroom lists, HMAC Bisley is listed so: http://mmpbooks.biz/mmp/tables/Vehicle_Names_V2.pdf Plainly not an RR here, so that's one question possibly answered... Though I don't know how much names were re-used. Kevin says he spotted a Bisley name on the Pith thread, but the photo seems to have disappeared: Armoured Cars, Tanks, Other Vehicles... & Pith Helmets.
Looking in Fletcher's 'Mechanised Force'. p.103 This looks suspiciously like Bisley under a magnifying glass: "A few of the big Lanchester armoured cars were supplied for troop evaluation, the five six-wheeled Crossleys arrived too, in 1933" Which might explain the album miss-name. They were not apparently popular. 11th Hussars said to have eventually garaged & ignored.