[1] When he was born, they "lived in a couple of rooms in Camden", before moving to the Rockingham Estate in London's Elephant and Castle, where he grew up, and left school at 15 with no qualifications.
[1] He was a business adviser to David Cameron and George Osborne, and was a vocal critic of Brexit.
[9] In August 2023, Mullins' Twitter account was suspended after he posted a tweet saying that "someone should kill" Mayor of London Sadiq Khan.
[10] In September 2024 following the Labour Party's general election win, Mullins announced that he would be selling his London penthouse and permanently relocating to Spain and Dubai, in response to rumours that the government intended to increase the rate for inheritance tax.
[13][3] Mullins was appointed Officer of the Order of the British Empire (OBE) in the 2015 New Year Honours, for services to the plumbing industry.