237 London Road, opposite Raleigh Gardens, is in 2024 a newsagents called Shreeji News. In 1989 this shop was Binneet, also a newsagent, which can just be seen on the right of a photo from Merton Memories.
This 1955 ad shows it to have been H.J. Chapman, confectioner, stationer.

1955 ad
Text of ad:
Telephone: MITcham 4709
H.J. CHAPMAN
Confectioner
Stationer – Tobacconist
GREETINGS CARDS
FOR ALL OCCASIONS
237 LONDON RD., MITCHAM
In this 1962 ad, it is called James Chapman:

1962 ad
Text of ad:
JAMES CHAPMAN
MITCHAM’S LEADING STATIONERS
GREETINGS CARDS
for all OCCASIONS
OFFICES & FACTORIES SUPPLIED
CONFECTIONERS
TOBACCONIST
237 LONDON ROAD, MITCHAM
Telephone : MITcham 4709
In a similar 1963 ad, the name has changed to V.P. Major & Co., and in a similar 1964 ad the shop has changed its name to Mitcham Cards (late Chapman’s) with the proprietor R. Gordon. In 1967 this receipt shows the business as Gordons Stationery, Office supplies:

15th May 1967 receipt from the 11th Mitcham Scout Group archives, showing the purchase of a Brother typewriter for £17.