On 21 Mar. 1754 Sandys was listed by Newcastle as candidate for Bossiney: the seat cost £1,500, of which Sandys was to pay £1,200.
Sandys was included in Henry Fox’s list of Members favourable to the peace preliminaries. But in the autumn of 1763 Jenkinson classed him as an opponent of the Grenville Administration, and he voted with the Opposition on Wilkes and general warrants. Rockingham in July 1765, classed Sandys as a supporter of his Administration. Sandys voted with Administration on the land tax, 27 Feb. 1767 and on Wilkes and the Middlesex election, 1769-1770. He is not known to have spoken in the House.
He died ‘immensely rich’,
