Baker was one of the foremost merchants trading with America; his interests, very considerable in the Carolinas
He was brought into Parliament by Administration in 1747 on the Edgumbe interest at Plympton. His re-election in 1754 was again arranged by the Treasury, Baker paying apparently £1,000, although £1,500 was usual at that general election. In 1761 he paid £2,000.
In Parliament Baker was a steady but not a subservient Government supporter. Although Newcastle attached the utmost importance to the plate bill, on its second reading, 17 Mar. 1756, Baker went away without voting.
Baker was repeatedly consulted by Newcastle on American affairs.
In the House Baker was a frequent speaker: between December 1761 and April 1765, Harris notes 26 interventions by him in debate. While he took the Government side against Pitt, Harris had high praise for him: ‘of all the citizens’ no one spoke ‘so well as Sir William Baker’; and on 25 Jan. 1762, when Baker defended the Government against Beckford: ‘a very able speaker’. But a new note enters on 19 Mar. 1762: Baker ‘was acute, and being a good natural logician, is sometimes pleased to ride in the regions of sophistry’; and on 13 Mar. 1763: ‘Baker sophisticated, a task to which he often degrades his very acute parts’. Harris ends by calling him ‘the Hippias or sophist of the House’: but there are no reasonably full and coherent reports of his speeches to prove or disprove that contention.
On Newcastle’s dismissal Baker went into sharp opposition to the Government. ‘He is a strong thinker and often a very free speaker’, wrote Newcastle to Hardwicke, 16 July 1762,
On 9 Mar. 1764 Grenville opened his budget which contained proposals for taxing America. Baker, who rose immediately after him, according to Harris ‘did not acquit himself with his usual acuteness, nor even with his usual sophistry’. Some of his argument is given in a fragmentary form in Nathaniel Ryder’s notes:
Agrees perfectly to our right to tax the colonies. Thinks the power of the Crown extends no further over the colonies than it does in England. And yet this power has been exerted as by orders passed here by the King in council which have gone to the plantations as kind of laws.
Stamps, does not dislike that duty in America but would have some regulations in England.
On 22 Mar. the American bill was debated ‘for taxing the commodities of that country’, writes Harris, ‘that it might in some measure support itself. Baker, against the bill, particularly against taxing French indigo’; also for a lower duty on molasses. Grenville defended his proposals. ‘Baker replied—Beckford for the measure.’ Clearly Baker’s objections as yet concerned detail rather than the principle of taxing America. When, however, on 6 Feb. 1765 Grenville brought in the American stamp bill, Baker opposed it, but, writes Harris, ‘had less argument and less specious sophistry than I ever heard from him—rambled (like Beckford) ... and acts the patriot, this rather awkwardly’. Again, when on 29 Mar. the secretary at war brought in the American mutiny bill, ‘Beckford and Baker ... objected to the quartering of men in private houses, and talked much for barracks.’ An opposition to Grenville’s American policy was forming.
Also outside the House, Baker between 1763 and 1765 played a leading part in attempts to organize opposition to the Government. In the City he ‘acted strenuously against the Court’; and Charles Townshend, when sketching plans of action, wrote to Newcastle, 30 Apr. 1764: ‘Sir William Baker should be desired to put the City in motion, both as an example to other counties, and as an attack nearest home.’ Almon reported to Temple, 12 Nov. 1764: Fitzherbert and Baker are agreed ‘that a weekly paper ought to be set up’. And when the Duke of Cumberland told Newcastle, 12 Dec., that since Charles Yorke had left them and Pitt would not work with them, ‘all opposition would be in vain’, Newcastle replied: ‘that opposition there would certainly be from our zealous friends, Sir William Baker, etc.; and that I thought our friends must go with it’. Baker consistently pursued the Opposition line, and was indignant when in May 1764 Newcastle, to please Charles Yorke, recommended George Hay, a Government supporter, to the Archbishop of Canterbury for dean of the arches. ‘I think I have great reason to complain of my old friend Sir William Baker’, wrote Newcastle to Thomas Walpole, 20 July 1764, ‘who is blowing up the party upon the silly point of Dr. Hay. ... If I had done anything liable to objection, Sir William Baker is not the man who should first have sounded the trumpet upon it. I know it proceeds from his long hatred to Charles Yorke.’ And in George Onslow’s letter to Newcastle, 3 June 1765, there is a somewhat cryptic reference to Baker’s ‘way of thinking and publicly talking of you’.
Baker’s not being too close to Newcastle recommended him to Rockingham, who did not want Newcastle to run the Treasury for him; and in a paper of June 1765,
Subsequently Baker went into opposition with Rockingham, and in 1767 was of the inner circle consulted on the proposal to take a shilling off the land tax.
