Mum is pretty sure the bloke on the right leaning against the wall with his hand on his hip is Grandad. The one in the white shirt and braces near him is Uncle Sid (my Great Uncle) who got him the job there.

1972 4/4 4 seater, 1981 MGB GT
1984 Harley Davidson Electra Glide, 1990 Kawasaki ZX10