The de Havilland Aircraft Museum at Salisbury Hall, London Colney, Hertfordshire, preserves the pioneering achievements of one of Britain’s most innovative aircraft companies. It is the only UK museum with three Mosquito aircraft and the first jet airliner, the Comet 1A, alongside historic aircraft, engines, early aviation exhibits, the Comet walkthrough and a Mosquito-cockpit flight simulator. Public access follows a seasonal Tuesday–Sunday pattern with Monday/holiday and calendar exceptions; confirm current opening hours, admission and Gift Aid terms with the operator. The main display buildings are wheelchair accessible with disabled toilets, while open aircraft are reached by stairs. Free parking is available; children must be supervised and only assistance dogs are permitted. Visitor address: Salisbury Hall, London Colney, Hertfordshire AL2 1BU, United Kingdom.