A more scenic route from London to Glasgow

[theageofthetra]

The roads are simply not conducive to doing East-West across the central Lakes - unless Mountain Goat offer something.
The useful routes have been mentioned already - and of course you can pick up the 555 at Windermere now the trains are running.

Fair point but surely making one of those passes bus only in the summer could be a great tourist attraction, particularly if they carried mountain bikes.