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}}D3802 is was built as an 0-6-0 Class 08 350hp diesel electric shunting locomotive. As the standard BR general-purpose diesel shunter, the Class 08 became the most numerous of any British locomotive class with 996 built between 1952 and 1962. It is being converted to a hydrogen-battery hybrid traction system.

In 2021 the SVR teamed up with the University of Birmingham's Vanguard Sustainable Transport Solutions to work on the ''Harrier hydro shunter project'' in [[Diesel Depot| Kidderminster TMD]].<ref>[https://news.railbusinessdaily.com/heritage-railway-joins-forces-to-build-a-locomotive-for-the-future/ Longhorn, D., 'Heritage railway joins forces to build a locomotive for the future', Rail Business Daily, 23 April 2021] (Retrieved 23 April 2021)</ref> This will see the UK’s first-ever conversion of a diesel locomotive to run with a replacement hydrogen-hybrid power pack. Completion is expected in the summer of 2023.<ref>[https://www.youtube.com/watch?v=Qo1zp4knSs0 'Evolution of the Harrier Hydro Shunter - a project update'] on SVR YouTube (16 December 2022) (Retrieved 17 December 2022)</ref> Updates can be found on the [https://www.facebook.com/groups/443297120418002 H3802 Harrier Hydro Shunter Project] Facebook page.