Thanks to you all for your kind comments.
I suppose it's not actually a bad model (although it's surely no better than 'average') but I was really disappointed. I bought this kit at the Southwell show a few years ago, and there was one in the competition section that someone had detailed, superbly, so that was the mental image of how I'd like it to have finished. I did start to add some internal detail, but pretty soon realised that the mismatch of the fuselage halves was going to need some serious sanding, which removed a lot of the external detain, so my plan to make a detailed model turned into a plan to just get it finished before binning it - I've got nowhere to display a model that big anyway.
Thanks also for your comments on my 'what next' question. I think it's going to be the Beaufighter, but OOB.
Pete