Jervis owed his return for Wycombe in 1790 to his old friendship with the 1st Marquess of Lansdowne and his political attitudes continued to reflect those of his patron. He had supported government on the Regency question, but reserved his judgment on the Spanish convention, 30 Nov. 1790, when George III remarked that ‘what could call forth Sir John Jervis will call for some explanation’. Nelson reported in April 1791 that Jervis ‘is said not to be employed, as having very much reprobated the Spanish convention; and his friend the Marquess of Lansdowne is so strong an anti-ministerial man’.
Jervis continued to show concern for improvements in the naval service. In December 1792, disregarding efforts ‘to misrepresent my motives, to describe them as a meditated attack on the Admiralty, and thereby prejudice me in the service’, he secured the co-operation of government in a scheme to relieve distressed superannuated seamen. He drew attention to the hardship arising from lapses in the payment of subsistence money to newly commissioned officers, 4 Feb. 1793. His appointment in the autumn of 1793 to command the expedition to the West Indies caused some surprise, especially as, in the words of Lord Granville Leveson Gower, ‘he has been passing much of his time last summer with Ld. Lansdowne’. He later claimed that since the appointment he had had no communication on political topics with Lansdowne, but, perceiving that ‘much narrow prejudice was harboured against him’ on account of his known political objections to the war, he decided to vacate his seat.
Jervis’s naval career was crowned by his rout of the Spanish fleet off Cape St. Vincent on 14 Feb. 1797, which gained him a pension and an earldom, though Lady Holland, perhaps unfairly, attributed the ‘extreme fuss’ that was made over Duncan’s later success at Camperdown to ‘some dirty politics’ of the King, who had not forgiven Jervis for his failure to vote for the war.
