Thompson was recorder of Ipswich, which he represented for most of his parliamentary career, and of London, for which he defeated Serjeant Pengelly. One of the managers of the impeachment of Sacheverell in 1709 and of Lord Wintoun in 1716, he was appointed solicitor-general in 1717, but was dismissed in 1720 for bringing against the attorney-general, Nicholas Lechmere, charges of corruption which the House of Commons, after an inquiry, resolved to be ‘malicious, false, scandalous and utterly groundless’.
owned he had a pension and commended himself much for his merits and services for which he had it, and that the ministers knew he had deserved it of his Majesty: the House made a jest of him and the Speaker took him down, by saying gentlemen should neither make personal reflections nor personal commendations in the course of their debates (it seems his merit was discovering to the ministers what his son-in-law, Sir W. Blackett told him about the rebellion when it was said the cash was lodged in his hands and the hanging three poor young lads at the riot at Read’s Mug house).
Knatchbull Diary, 9 Apr. 1725; for the riot see Pol. State, xii. 221 et seq.
Next year he accepted a minor post in the court of Exchequer. He vacated his seat in 1729 on being promoted to be a baron of the Exchequer and died 27 Oct. 1739.
