Thanks for all your responses guys, honestly a massive help. I think I'll pass on this particular one as the general consensus seems to be that it's vastly under-mounted and would be a pain in the backside to use, which I hadn't considered as much as I probably should have!
I have been looking at a couple more today, and have found the following listings, the first being a "Konus Konusky 200" with a motorised mount and several accessories, list price £375 again.
The second being a 120mm Skywatcher refractor that I'm not sure of the exact model, comes on an EQ3-2 mount, list price £275
They both seem a lot more managable and usable in general, but I'm not 100% sure on the refractor, as I'm really looking to get into visual astronomy, not AP.
If anyone has any opinions on these, or indeed if I should choose the first one over either, that would be fantastic!