IWM London on Lambeth Road covers the story of modern conflict and its effect on people’s lives, from the First World War through to contemporary warfare, and includes the museum’s major Holocaust Galleries and Second World War Galleries.

Its own visit page is unambiguous: “Entry to the museum is free, you don’t need to book.” That applies to all visitors, with no membership or ticket needed for the permanent galleries.

Simply turn up on the day during opening hours. Some special exhibitions and events are ticketed separately, so check the What’s On listings if there is a particular show you want to see.