I think he looks springer /cocker cross. Theres a lady near me who bought a cocker from that well known dog place in manchester and paid cocker price, think she even got a pedigree but as she grow she was much taller than a cocker, had shorter ears and had more of a springer type body. She eventually tracked down the breeder, and like you it was curiosity as she really loved her dog. It turned out she was a cocker / springer cross.