The Postal Museum is a museum dedicated to the history of the postal service in the UK. It is located in London and was opened to the public in 2017. The museum is housed in two separate sites - the Postal Museum itself, which is located in Phoenix Place, and Mail Rail, an underground railway system used to transport mail under London, which is located nearby.

The Postal Museum tells the story of the postal service in the UK, from its early beginnings to the present day. Visitors can explore the history of the service through a variety of interactive displays, artefacts, and exhibitions. Some of the highlights of the museum include the Postal Museum Archive, which contains a wealth of information about the history of the service, and the Postal Museum Shop, which sells a range of postal-related items.

Mail Rail is a separate attraction that is part of the museum. It offers visitors the chance to take a ride on the original underground railway system that was used to transport mail under London from 1927 to 2003. Visitors can ride on specially designed trains that travel through the tunnels and learn about the history of the railway system and the people who worked on it.

The Postal Museum also offers a range of educational programs and events for schools and families. It is a popular attraction for visitors of all ages who are interested in the history of the postal service and the role it has played in shaping the UK's social and economic history.