| Constituency | Dates |
|---|---|
| Grantham | 1818 – 1826 |
| Lostwithiel | 18 Dec. 1826 – 1832 |
Cornet 16 Drag. 1810; lt. 14 Drag. 1811; capt. 16 Drag. 1813, half-pay 1814 – 15; capt. 5 Drag. Gds. 1816, maj. 1821, half-pay 1822, lt.-col. 1826, col. 1841, maj.-gen. 1851, lt.-gen. 1859; col. 16 Drag. 1859; gen. 1866.
Equerry to Prince Leopold 1816; master of the ceremonies to Queen Victoria 1847 – 76.
Cust served in the Peninsular war. He offered himself at Grantham, where his family had formerly controlled a seat, in 1818. He emphasized his connexion with the borough, where the London freemen had encouraged an outsider to stand; and was returned second on the poll. He supported administration, voting with them on the question of Wyndham Quin, 29 Mar. 1819, and, after taking three weeks’ leave of absence, on 18 May, against Tierney’s censure motion. He voted for the foreign enlistment bill, 10 June. On 23 Nov. 1819, seconding the address, he declared, ‘I now for the very first time in my life venture to address any public assembly’. He then expressed his conservative views at some length. He remained in town until at least 23 Dec. to vote for government’s measures against radicalism. He died 14 Jan. 1878.