Arriving on Boxing Day - help!

Hi, it sounds like a really fun trip! Yes, there are a lot of things closed on Boxing Day but there are things open, including many shops, and some museums (just check the websites).

This article by London Walks gives you some great ideas for fun things to do that day in London, including taking one of the wonderful walking tours they have. I don't know if you took one when you were in London before—the organization has been around for over 30 years, but they have some great walks that I think you and your family would really enjoy.

https://www.walks.com/blog/boxing-day-london/

Also check your transport. There will be reduced services on the tube and buses, and I believe the Elizabeth line is closed that day. I would not suggest taking a taxi though as the prices will probably be higher on Boxing Day, since it's a bank holiday. Here is a press release by TFL (Transport for London) that gives a breakdown of what's going on that week with regards to public transport. https://tfl.gov.uk/info-for/media/press-releases/2025/december/majority-of-tfl-services-running-over-christmas-and-new-year

London Walks has walks planned that day.

Major stores like Harrods and Selfridges will be open but expect big crowds as it's usually the start of big sales.

Both Westminster Abbey and St. Pauls Cathedral are open to tourists.

This link has useful info.
https://www.timeout.com/london/things-to-do/things-to-do-on-boxing-day-in-london

If you aren't booking a car transfer, check transport options carefully as there are restrictions.