Heritage Open Day: Uncover RAF memorabilia, various uniforms on display Graffiti in smoke on ceilings & cartoon on walls by David Langdon at the Twitch Inn Heritage Centre. Located in the Cellar at Douces Manor, St. Leonards Street, West Malling. Home to the RAF West Malling Officers mess during WWII. Visitors can see a brief history of Douces Manor, memorabilia of RAF West Malling and other local interests. Our annual photographic exhibition this year is entitled ‘History of West Malling from its earliest buildings’