As well as playing for Oxford and Kent, Chalk played in two Gentlemen v Players matches and played four times for Marylebone Cricket Club (MCC). He appeared for an England XI against the touring Indians in 1936 and for the Gentlemen of England in against Don Bradman's Australian side in 1938. Chalk's extended family of cricket-playing relatives included his uncle Harold Prest who played for Kent either side of World War I. He married Rosemary Foster, the daughter of Geoffrey Foster who had played for both Kent and Worcestershire. His brother-in-law Peter Foster played under Chalk's captaincy at Kent in 1939.