Originally Posted by
XRT_si
travelling on a Friday, too annoyingly and can't leave Inverness until 11am.
So you'll be fairly late getting South if you have sensible breaks....
Pick your favourite route from Perth to M74, I'd probably stick to A9/M80/M73.
Use the Toll to get past Birmingham unless you're well after rush hour, then M42, M40 to London, unless you really need to go to the deep East.