Dominic Cummings’ allegation that Boris Johnson considered an “unethical, foolish and possibly illegal” plan to ask Conservative donors to fund a lavish flat refurbishment has put the spotlight on the PM and his Downing Street residence. Here’s what you need to know.

Which flat was refurbished?

Like several of his recent predecessors, Boris Johnson and his fiancée Carrie Symonds chose to live in the four-bedroom flat above Number 11 rather than the smaller two-bedroom residence above Number 10 when he became Prime Minister. The couple currently live in the flat with their young son, Wilfred.