At the general election of 1754 Lyttelton was returned unopposed for Poole, where he had been recommended to the corporation by Henry Pelham. In Dupplin’s list drawn up after the election he was classed as a Government supporter. But in May 1755 he acted as an intermediary in negotiations between Leicester House, Pitt and the Grenvilles,
Crippled by gout, Lyttelton could no longer pursue an active military career, nor even assume office which required close attendance. On the formation of the Pitt-Devonshire Administration his name was put down for the jewel office (£450 p.a.)—
but Sir Richard [wrote Temple to Pitt, 9 Nov. 1756] does not like it by any means, as it is not a place of particular dignity, nor much profit ... I offered to Sir Richard to renew his pretensions to comptroller; but that he declines, from an impossibility of going through the courtly attendance.
Finally, as Temple informed Pitt on 11 Nov., he agreed to accept the jewel office,
though with reluctance, unless the Privy Council be added to it: in which case, he will be most thoroughly pleased; without it he will be pleased too, if his friends wish him to accept it.
The Privy Council was not added. In March 1758 he was thought of for envoy to Turin but did ‘not care for such commission’.
Some time before 1760 Lyttelton went abroad for his health, and spent the next three or four years in France and Italy. He did not stand again for Poole in 1761,
When in 1761 the Lytteltons were expected in Florence, Walpole wrote to Mann: ‘You will be happy in Sir Richard Lyttelton and his Duchess; they are the best humoured people in the world.’
Lyttelton died 1 Oct. 1770.
