G'day Old Rowley, thanks for the extra information.1860's is a great help, that puts him in Fleet St Birmingham, so perhaps he had business in the jewelery quarter. Thanks for the pointers, teaching me to be more observant in the future in regards to dress and hairstyles. I would never have thought to look at his hair curls!
The actual photo is more like layered cardboard which has worn away at the back, so there's no markings unfortunately.
Thanks again for your help Joy