Why has OS Maps gone?

[JuliaHumphrey]

Why have you stopped using OS Maps? They were far more detailed and much easier to follow? Im going to have to find another site which uses them.

[Colin]

The current 'roadmap' is based on Open Street Map data, but its a slightly different rendering of that data ('OSM Bright' rather than 'Mapnik').
We're still looking at improving our new map options. Hopefully, we can improve thing for you in the near future.