Thanks again to the OP for his work.
I just loaded it to my 605 and thought I’d post pics of how it looks compared to the talkytoaster ones.
This is the OP’s new OS-style map:
This is the same place on the talkytoaster map (with contours, routable)
For me, I think I still prefer the talkytoaster one as it has contours which I like to see but otherwise, it is good though as someone previous pointed out, roads seem to cut over eachother at juntions rather than just being continuous lines – you can’t see it in the pic above, but at t-juntions, I found a lot of roads overlap in a way that makes it confusing – less of an issue out of town though where roads are less densely packed.