the Sandtoft Trust, 13 by the British Trolleybus Society, one each by the Bradford Trolleybus Association, the Doncaster Omnibus and Light Railway Society, the National Trolleybus Association, and the Rotherham Trolleybus Group, while 14 were privately owned. They originally ran on 31 different systems, eight of which were abroad, 21 were in England, one was in Scotland and one was in Wales. Ten of them were single deck vehicles, 47 were double deck, and two were just chassis. The oldest was a Mexborough and Swinton vehicle, dating from 1928, while the newest was part of an experimental scheme by the South Yorkshire Passenger Transport Executive, and was built in 1985. One vehicle does not fit into most of these categories, as it is a replica of a single deck trolleybus originally built for the Keighley system in 1911, but built for the museum in the Czech Republic and delivered in 2019. In addition to trolleybuses, 14 diesel buses are located at the museum, some of which are used to give tours around the locality on open days. The collection also includes some service vehicles, including four tower wagons, which were used to maintain the overhead wiring, the oldest of which dates from 1903 and was horse-drawn. Other ancillary vehicles include a pole crane, a Smith Electric Vehicles parcel van, three tractors and the lower saloons of two trams. Gallery See also Black Country Living Museum - with trolleybuses East Anglia Transport Museum - with trolleybuses National Tramway Museum Summerlee Heritage Park List of trolleybus systems in the United Kingdom Bibliography </ref> </ref> </ref> References External links Official website of The Trolleybus Museum at Sandtoft. Bus museums in England Borough of North Lincolnshire Trolleybus transport in the United Kingdom Museums in Lincolnshire