Post war MPs,they have a tax disc? but location may not be UK,one has gloves on that might have RMP on them,two of the bikes have the earlier type sump guard.
HAL I think is a vehicle depot in the UK possibly Halstead, BTE =British Troops Egypt and MELF= Middle East Land Forces, so if two of these were sent to the Middle East and the other remained in the UK I suspect this picture was probably taken in the British Isles around 1950?
sorry off the subject a little bit I had an M20 which I have sold some years ago but when I was looking a the reg number the key cards for YE wasn't available I se on this post some key cards for YC YD is there a key card for 10 YE 62 it was sand coloured when I got it some 40 odd years ago also a question to the jeep man there was a program on TV call wheeler dealer they were restoring a jeep a thing that puzzled me was the head lights were on brackets that seems to let the head lights to swing out and faced upward why thanks roger retired motorcyclist
The Jeep headlights on the brackets that swing. They could be used for lighting up the engine bay when working in there. As far as I know, that was a Ford design.