Class 66 No.66784 (acquired from DB Schenker by G.B.Rf. previous number 66081) in G.B.Railfreight livery and named 'Keighley & Worth Valley Railway 50th Anniversary 1968-2018', passes Marholm on the 18th of August 2019 with 6G30 Belle Isle to Doncaster Belmont engineering train.