Sir Laurie Magnus, is Sunak’s independent adviser on Ministers’ Interests, and has started the investigation to find out if Zahawi broke Ministerial rules over the estimated £4.8 million HMRC bill when he was the Chancellor.

Source: https://londonlovesbusiness.com/labour-tells-sunak-the-job-in-no-10-is-too-big-for-him-and-not-sacking-zahawi-shows-how-hopelessly-weak-he-is/

The furore has heaped political pressure on Rishi Sunak, who has ordered his new ethics adviser, Sir Laurie Magnus, to investigate Mr Zahawi’s tax affairs.

Source: https://www.independent.co.uk/politics/nadhim-zawahi-tax-dispute-tory-mp-b2267525.html

The Prime Minister has spoken to both Ms Braverman and will consult with No 10 ethics adviser Sir Laurie Magnus on his return to the UK to gather “more information” before deciding upon launching an investigation.

Source: https://www.express.co.uk/news/politics/1773315/suella-braverman-resign-speeding-ticket-poll-spt