This 1920 ad has W Rock & Sons bakery at number 6 Gorringe Park Parade. After renumbering, no. 6 Gorringe Park Parade became number 41 London Road. As it has a SW17 postcode, this address may be listed as Tooting, but this is in Mitcham, being south of the River Graveney, which was the boundary of the urban district of Mitcham.
In the 1914 directory, he is listed as Walter Rock.
In the 1938 directory, W. Rock & Sons, bakery, at 41 London Road, also has shops at 156 London Road and 211 Manor Road.
In this 1954 telephone directory listing, the Manor Road bakery is shown, but no longer the London Road shops. In addition the bakery is in Hackbridge:
In 2016, the occupant of 41 London Road is the Mulino bakery and sandwich shop.