Robins Bikes was a shonky outfit in Forest Rd, Walthamstow back in the 80’s, opposite The Bell pub. He ripped me off over a pair of wheels when I was a novice and have never forgiven him.
He used to buy stuff up and get them repainted and stickered up, so God knows what the history of that bike is.
Looks like a well made frame ,Not obvious who made it through-https://www.ebay.co.uk/itm/254916542635