Phew, that's a relief!
I never print screencaps from Bing, you get a bigger area on MemoryMap, but whenever I want to look somewhere up on Bing I always select the OS view.
Just looked at the trailzilla routing page, and must say the OS mapping is great considering its free. Its on a large area too.. It is as good as the paid for Ordnance Survey mapping app,
if you only want to create routes and download the GPX files. Plus I guess you are unable to download maps for offline use.
I`m beginning to think I will not subscribe to the paid for OS mapping anymore, as Trailzilla enables the creation of routes..I can then transfer to my Garmin which I use a talkytoaster map on. (that is a paid for map but was only £11 and its a raster map). Even the free Talkytoaster maps are very good.