Re Main Deck Loaders(MDL) and the GHA's:- to the best of my knowledge MDL are not specifically mentioned in the GHA licences at MAN. It is also not cost effective to have a MDL sitting at an airport i.e MAN if no possibility of usage. Also probably why NCL now have a MDL ex Doncaster closure, as they do have ad-hoc freighters.
It is not just having the equipment but also trained employees, all that experience was lost after Cathay, Lufthansa, FedEx etc., departed.