Pressure on the railways could impact journeys over the festive period, the transport secretary says.
People arriving in England can end their self-isolation with a negative test taken after five days.
Nearly 14,000 deaths occurred in the week ending 13 November - with 3,000 linked to Covid.
Harry Dunn's mother says the ruling is "just a blip along the way" in their fight for justice.
Eight Met officers are investigated over claims of excessive use of force against a black woman in custody.