That looks very much like Ken Cumberbatch from Guyana
'Twas indeed Ken, we had two guys from Guyana and two from Barbados.
I lied about the date, we started on Monday Sept 11th, the photo was taken on the Thursday or the Friday of that week.
The following week we were off to college (Ealing or Slough) for two terms, we didn't start our attachments until the following Easter. It's possible that the Caribbean guys had been around the company a little time before the rest of us but I don't think so.