Hi Jon,
Firstly, welcome to the forum. The best forum for model boats bar none. You'll get some cracking advice on here and never be embarrassed to ask any questions.
The Type 42 were fine looking ships especially the 'stretched'42, I remember trying to 'cop' all the 42's at various Navy Days at Pompey back in the 80's which I and my good mate managed to do as well as all the Leanders and the Counties........ah those were the days when we had a Navy! The only ship we didn't get to see was HMS Unseen, not sure why!
Trying now to remember the names without googling!...........York, Gloucester, Edinburgh and...........?
Great thing about modelling the 42 is the amount of info there is online, unlike my most recent project, a BPBCo 71ft 6in Motor gun boat in 1/24 scale, there is some info but not a lot, the Vospers favour popularity for some reason!
Anyway, looking forward to seeing your progress on this, I've always been tempted to try a 42 but always been put off by the complexity of the bridge wing area and just below that and also the varying angles of the bridge windows, I'll be interested to see how this is done and then possibly may be I'll have a bash at the 42 myself.
Kind regards, Dave
P.S Whats the hull below the workbench.....looks like a black swan class (probably wrong!}