The Ridley family had long had political weight in Newcastle-upon-Tyne but, as a younger son, Nicholas had to look elsewhere to realize his parliamentary ambitions. Backed by the wealth of both the Ridley and Colborne families he steadily bought his way through a succession of close boroughs.
The Kenrick seat for Bletchingley vacated by the death of James Milnes was no longer available to Ridley Colborne at the general election of 1806 and he turned to Edmund Estcourt, who managed Malmesbury, where the votes of five of the burgesses sufficed to return him. (The return was challenged, unsuccessfully.) No seat was immediately forthcoming in 1807 but, through the good offices of Howick and Tierney, Colborne was enabled to purchase a seat for Lord Thanet’s borough of Appleby after Howick, who had been originally returned by Thanet, was accommodated at Tavistock.
Like his father and brother, Ridley Colborne acted with the Whigs. On entering Parliament he was in the minority against the Duke of Atholl’s claims, 7 June 1805, and in the majority for the criminal prosecution of Melville, 12 June, being listed ‘Opposition’ a month later. In his maiden speech, 8 July 1806, he was a critic, for reasons of economy, of the grants proposed to branches of the royal family. On 12 July he joined Brooks’s Club. He was listed a staunch friend of the abolition of the slave trade in 1806. On 9 Apr. 1807 he voted for Brand’s motion following the dismissal of the Grenville ministry. He was a ‘thick and thin’ Whig in the Parliament of Moreover, he voted for Whitbread’s resolution in favour of peace negotiations, 29 Feb. 1808. He opposed the orders in council, 3 Mar. 1808, and again four years later. He regularly supported Catholic relief and economical reform. On 19 May 1809 he expressed his opposition to Curwen’s reform bill, ‘as recognising and giving more sanction to burgage tenure boroughs than was consistent with a reform in the representation, and turning over all such seats to the Treasury if they could not be bought and sold’. He afterwards informed Earl Grey that he did not regret opposing the bill ‘in every stage, even when it was countenanced by those whose opinions I was generally inclined to respect’. He thought the bill catered more for Curwen’s ambition ‘to be the father of an Act of Parliament’ than for reform.
At the election of 1812 Ridley Colborne’s patron Lord Thanet regretted that the compromise he had accepted at Appleby prevented him from returning him again.
Ridley Colborne’s loyalty to the Whigs obtained him the peerage he coveted in 1839. He died 3 May 1854.
