Geismar Mini 4-4 trolley 901096

The Geismar Mini 4-4 four seater trolley and trailer serves a similar function to the Lesmac and earlier Wickham trolleys, being capable of transporting up to four personnel plus equipment to the work site,^[1]

The trolley is powered by a 4-stroke Honda GX200 petrol engine and has duplicated driving positions, allowing it to work in both travel directions. It can tow or propel one or two optional Mini BT trailers, each transporting up to 500 kg gross total weight of materials; other options for larger trailers to transport up to six personnel and their equipment are also available.^[1]

The Mini 4-4 trolley 901096 (full ENV/RIV number 99709-901096-6) was built by Guismar in 2010, build number M44/045. It was based at Rugby NR Depot between 2010 and 2018, then at Chesterfield TRAC Depot up to 2020, and finally at Bletchley Triangle NR MDU depot until 2025. It was reported to have arrived at the SVR from Bletchley in April 2026, with two Mini BT trailers, 011528 (99709-011528-5) and 011537 (99709-011537-6).^[2]