The levelling-up secretary, transport secretary and deputy prime minister will have to remain at home for up to 10 days under England’s rules.
They met Barnaby Joyce in London for trade-related talks earlier this week.
He was diagnosed with Covid-19 in the US, during the next leg of his trip.
Mr Joyce, who felt symptoms including fatigue and leg pain, believes he was infected while in the UK.
No Xmas parties for them, then … 