Ever wondered what it takes to run a railway? Find out at Ruislip Lido Railway's Open Day, where you can go behind the scenes at Britain's longest 12 inch gauge railway.
Speak to the staff and volunteers who man the railway and sit in some of the locomotives on display. The railway's shop and tea rooms will be open too.
The Open Day is part of the Ruislip Woods Festival, which holds its own attractions, including the scheduled appearance of the Quack Pack — a pack of ducks led by a sheepdog. Other attractions include a birds of prey show, ferret racing, Morris Dancing, and an archery range where kids can have a go.
The KinoVan is also in town, showing vintage films of Hillingdon life — if you've lived in the area for more than a few years this should be a fascinating insight into places you're familiar with.