Think Cavalex have been around a bit longer than Accurascale but I'm open to correction. Used to check their website for regular updates. The loco project you refer to is the Class 91, Hornby released the said version last year but judging by the reviews it fell short so it's a pity Cavalex didn't get to produce their own. Cavalex looked at the numbers and decided it wasn't a viable proposition. They'll be producing the Class 56 which has an interesting history, some of which have been re-engineered as the class 69 (a model of which Bachmann have the license to produce). Will be interesting to see what their first locomotive [class 56] is like. You can't buy direct from them and they sell through a limited number of stockists so this, I'm guessing, doesn't help their cause. Hope this was of some help to you.