1959 mayor of Mitcham. Born 11th May 1913, died 1987, aged 74.
From the Mitcham News & Mercury, 22nd May, 1959:

Forty-six-year-old Ald. David W. Chalkley, prospective parliamentary Labour candidate for Croydon North-West was elected Mayor of Mitcham yesterday (Thursday). Ald. Chalkley, who lives in Deal Road, Tooting, was nominated Mayor last year, but he was forced to turn the offer down through his wife’s illness.
Housing Committee chairman in 1972, as stated in this clip from Mitcham News & Mercury, 16th June, 1972:

Miss Barbara Thrupp, ex-Mitcham Council Housing Manager, in the Close named in her honour. With her are, front row, left to right, the Town Clerk of Merton, Mr Sidney Astin, Housing Manager Mr Archie Brown, and Housing Committee chairman Coun David Chalkley.
Merton Memories Photos
1959 as mayor
with family at mayor making ceremony
1960 at Red Cross Dance
Chalkley Close, off St Marks Road, is named after him.