While living in the UK, I bought a Heritage pass and took off almost every weekend either by light rail or by car. When my wife came to visit though, we drove from my flat near Crawley to Scotland over a 3 day trip. We visited in order: Ashford, Broomfield (Leeds Castle), Rettondon, Chelmsford, Ipswitch, Cambridge, Nottingham, Leeds, Newcastle upon Tyne, Edinburgh, Perth and finally ending in Dundee where I have distant relatives.
In all my trips, driving through the hills of Yorkshire and Cumbria are the scariest, but getting to Scone Palace outside of Perth through snow was quite challenging.