GB Railfreight 99006, leading 66749 'Christopher Hopcroft MBE 60 Years Railway Service', speeds through Brighouse with 6Z59, the first loaded biomass train from Tuebrook Sidings heading east to Drax Power Station led by a class 99, along the Calder Valley line.

It’s also worth bearing in mind that, obviously, 99006 was working on diesel along the Calder Valley, which would have involved climbing significant gradients heading east up to Summit Tunnel, between Rochdale and Todmorden, and out of Wakefield Kirkgate up to Crofton West Junction.