A couple of us who were around at the time (he is selling the July 1968 Socialist Standard) remember him as Dave but can’t recall his second name. He was employed by Remploy, which used to employ disabled people under shitty conditions its own factories (now it directs them to similar jobs with ordinary employers).
Just a random geezer. That’s disappointing. Now saved for all time (or until the collapse of civilisation – about seven years I reckon) as “Socialist Standard seller”.