This is William Page who was a carrier from Norton to Northampton, Daventry, and occasionally Banbury. He also hired and sold horses and traps, (open carriages). He isn't wearing wellingtons, but boots and leather gaiters, which button up the sides.
Frank Page his son had a smart and highly polished pair of chestnut leather gaiters which he wore over corderoy trousers with a striped collarless flannel shirt, waistcoat, brown tweed jacket and a khaki cotton overall (long coat) as working gear till he retired in 1958. Frank's market and Sunday best was a pinstriped navy suit with yellow and black waistcoat, white shirt and tie. And a watch chain.