Welcome to the forum johnjoe, Kelly's Directory 1895 shows :-
Chamberlain, King & Jones, cabinet makers, carpet factors, upholsterers & decorators, 27 to 30 Union Street & 12 Union Passage, manufactory, 97 Kingston Road, Coventry Road.
The same details appear in 1878, 1883, 1895, and 1900, still trading in 1949 at different address .
And still going Martineau Street 1956.
Colin