The third son of Benjamin Heath Malkin and his wife Charlotte Williams, daughter of the Rev.
Thomas Williams, headmaster of Cowbridge grammar school, he entered Trinity College, Cambridge in 1820, graduating B.A.
[3] A civil engineering partnership with Angier March Perkins and James Philip Roy was dissolved in 1829.
[4] He purchased an estate at Corrybrough, Tomatin, Inverness-shire, where he became a Deputy Lieutenant; and also resided at 21 Wimpole Street, London.
[1][5] Malkin was associated with Cambridge University Cricket Club and was recorded in one first-class match in 1826, totalling 11 runs with a highest score of 11 not out and holding no catches.