The Sunday Mirror leads with claims a Tory donor’s firm carried out the “gold wallpaper makeover” at Boris Johnson’s flat. The PM is facing questions about how the home improvements were paid for, and an official investigation is looking into whether a donation towards the works may have broken the law. Mr Johnson has said he paid the costs himself, but he has not specified whether this happened when he first received the bill, or whether he was loaned the money and later repaid it.