Tom Hanks and Emma Thompson will be in the capital for the last day of the BFI London Film Festival.
The pair will be on the red carpet for the screening of their film Saving Mr Banks, the story of how the movie Mary Poppins was made.
More top news
Police said they are "extremely concerned" for the welfare of a "vulnerable" mother and her two children who have gone missing in Bexley.
It is hoped the 7,400-mile journey will become a cost-efficient and time-saving way of transporting trade between China and the UK.
The Supreme Court is set to decide on whether disabled travellers are legally entitled to have priority use of wheelchair spaces on buses.