This map has the problem of combining a dense urban network around Birmingham with cross country links between the west and east coasts. A difficult task.
1 Bad bends/junctions etc
2 Derby looks like a suburb of Birmingham
3 Terrible west coast main line - breaks at Nuneaton
4 Terrible Coventry - Leamington
5 Leamington and Banbury shown differently although the same
6 Wolverhampton looks bad as Walsall line station alongside although all routes use the same platforms