Both Mirvale and Henry de Lacy II are eminently capable of running Middleton's services, as are all their steam locos. Both locos are somewhat larger and more powerful than the two Manning Wardles. With sixteen steam locos in the collection (plus Picton) and a maximum requirement for four in service, even if there was a plan for it, some of those locos aren't going to steam again for perhaps thirty years. Agreement was nearly reached with the NYMR to overhaul Mirvale for that line's 60th anniversary in 2018 but it unfortunately fell through. With the diesel fleet, it is somewhat different as there is no 10 year time frame to consider. Of the ten diesel locos, only the small Fowler is non-operational long term due to its small size (40 hp) and there's actually no reason why that couldn't run again if it was wanted. In theory it just needs a radiator but, after so long out of use, would really need a strip down and some mechanical TLC.