Hi Paul - ah, that's what I thought. I tried the Horizon scenery, and while it looks great at altitude , even with Treescapes I found it unconvincing at low level. I'm now flying with UTX and FTX Global, and the UK has never looked better, at any height. Given it is not map-perfect, but it's perfectly possible to fly VFR using water features, coasts, conurbations etc. I disable all UTX roads, and the result is IMO a pretty good representation of wartime British countryside.
But that's just my opinion and what works for me. Thanks for posting some really great pix !