Foreign secretary David Cameron has taken his seat in the House of Lords after his official introduction ceremony.

The former prime minister will now be known as Lord Cameron of Chipping Norton, reflecting his long-held ties to the Cotswolds town.

Mr Cameron has a home in nearby Dean in his former constituency, Witney.

It was announced last week that he had been elevated to the Lords as a life peer to allow him to serve in Rishi Sunak’s Cabinet after he resigned as an MP in 2016.

Witney Gazette: Lord Cameron wore the traditional scarlet robes for the short ceremony

He previously sat in the Commons for 15 years, including five years as leader of the opposition and six years as prime minister.

He was supported by Lord True, the Leader of the House of Lords, and Baroness Williams of Trafford, the chief whip in the Lords.

Each were nominated for their peerages by Lord Cameron himself and Lady Williams had served as a minister in his government.

Lord Cameron, 57, wore the traditional scarlet robes for the short ceremony as he swore the oath of allegiance to the King.

The red benches of the upper chamber were more full than usual, with people also sitting on the stairs and on the step at the foot of the throne.

Those in attendance included Lord Pickles, who served in the Cameron government.

Lord Cameron read the traditional oath: “I, David, Lord Cameron of Chipping Norton, do swear by Almighty God that I will be faithful and bear true allegiance to His Majesty King Charles, his heirs and successors, according to law, so help me God.”

Soon after walking out of the chamber to mark the end of his introduction, Lord Cameron returned to sit on the Government front bench between Lord True and Lady Williams.

Peers could be heard calling out to welcome him to the chamber as he arrived.

Witney Gazette: Lord Cameron of Chipping Norton during his official introduction to the upper chamber

But Lord Cameron’s appointment to the upper chamber was not universally welcomed, with the Liberal Democrats writing to the prime minister’s ethics adviser urging him to launch an investigation into the new foreign secretary’s appointment.

Among her reasons for urging the investigation, Lib Dem chief whip Wendy Chamberlain cited Lord Cameron’s past lobbying work for investment firm Greensill Capital, for which he privately lobbied ministers in an attempt to win access to an emergency coronavirus loan scheme.

Ms Chamberlain said: “We need urgent clarity over David Cameron’s financial interests, which could lead to serious conflicts of interest while he represents the UK on the world stage.

“If he was serious about acting with integrity, Rishi Sunak would address these concerns by asking his ethics adviser to launch a full investigation into Cameron’s appointment.

“David Cameron has serious questions to answer over whether he can act impartially in the best interests of the British people. His judgment and integrity have all been questioned in recent years and for good reason.”