Even when he does not speak he is a conspicuous feature of the House of Commons. He lounges back elegantly in his end-of-row seat, his long legs crossed and hands knotted together in intense concentration. There are no BlackBerrys or iPads for Jacob Rees-Mogg. Unlike other backbenchers, he does not get bored by the painstaking details of legislation. He has been dubbed ‘Jacob Chaise-Longue’ by one Labour wag and does indeed treat his seat as he would his own sofa, leaning back onto its arm before languidly stretching to his feet to ask a perfectly-crafted question in his upper-class drawl.

But it is his speeches that have made him an iconic figure in the chamber. MPs have been known to scurry across the parliamentary estate when they see his name pop up on the Commons annunciator; Tory Louise Bagshawe and Labour’s Kerry McCarthy are particular fans of ‘The Mogg’.

Rees-Mogg’s skills as an orator were laid bare in his maiden speech shortly after he was elected Tory MP for North East Somerset last May. He had failed to win Westminster seats twice before. His younger sister Annunziata was unsuccessful in 2010 on her second attempt, and their father Lord Rees-Mogg, a former editor of The Times, had failed to win twice in the 1950s. The new MP observed: “My father… told me that between him, myself and my sister, we have tried seven times with one victory. I fear that if we were a football team, people would be calling for the manager to be removed.”

A born storyteller, he went on to describe his Somerset heroes, peppering his speech with anecdotes and holding the House enraptured, without the use of notes. “Not since the days of Boris Johnson have we in this chamber been treated to such a colourful, imaginative and evocative detailing of our history,” Labour’s Tom Harris said afterwards.

Rees-Mogg, an investment banker who was educated at Eton and Oxford, harnesses his intellect to great effect. He is deferential and courteous to opposition MPs, unlike many of his point-scoring colleagues. And he loves to embellish his speeches with quirky facts to keep bored backbenchers on their toes. In a debate on food labelling, he was asked about kangaroo meat. “Although Somerset is very good at almost everything, kangaroos might find the climate a little colder than they are used to, and perhaps the fences not quite high enough,” he said. “They might do awful things like hopping over to Gloucestershire, which would no doubt be extremely dangerous for their health.”

He also does not shy away from paying tribute to Margaret Thatcher in economic debates. “Let us think of the great lady in 1981, when 360-odd economists wrote to The Times − a great newspaper with very fine editors − to suggest that the economic policy was wrong,” he said. “That was two years in and it was the hardest point and that government stuck to their guns, which led to the recovery we then had.”

But Rees-Mogg incurred the wrath of Labour MPs in November when he was accused of filibustering during the Sustainable Livestock Bill − by reciting 12 lines of poetry about farmers. He eventually talked out the legislation with the memorable words: “I particularly dislike carrots, and I remember that George Bush Senior got into terrible trouble…”

Not even his fiercest political opponents could deny that Rees-Mogg has style.