I purchased this picture a few years ago from a bookshop which was closing down, it was based at Silverstone and was well known but I cannot recall the name....!
I am not sure if the picture has previously been posted on the Forum. Looks like the start of a relay race.
Hello George There is a picture in the Bill Boddy History of Brooklands Motor Course (Plate 95) showing these cars probably a few minutes after your picture! It is captioned as H.G Symmonds (MG No. 14) and J.D.Barnes (Singer No.15) at the start of the 1935 LCC Relay Race. Regards Keith