By the middle of the 18th century Lamb’s family had acquired the leading position in the corporation of Rye and, after many years as government agents in the borough, had, with the aid of Crewe’s Act, established themselves as virtual patrons, although they continued to work in close collaboration with the Treasury. In 1790, his father considered it ‘proper for him to think of being returned, as soon as he can, and to get some friend to hold it for him till he is out of his mayoralty’, but nothing came of this notion.
The Liverpool ministry expected his support and received it in the divisions on the civil list, 8 May, the Regent’s expenditure, 31 May 1815, the army estimates, 6 Mar., and the property tax, 18 Mar. 1816. He voted against Catholic relief, 2 Mar., 11 and 24 May 1813. On 5 May 1819 he was granted three weeks’ sick leave,
