Hmm...

Don't forget to allow time when driving from England to Scotland (or vice versa) for Border Controls and Customs etc...
Since the Scottish Parliament ordered the abolition of Excise Duty on Whisky within Scotland, a lot of contraband running is attempted.
This mostly affects southbound traffic
Also, since the lifting of export restrictions on Scottish meat products following Foot and Mouth and BSE, incoming traffic is stringently examined for any and all animal products. Do not be surprised if you are asked to allow your personal effects to be examined in case you are carrying any frozen cattle/livestock sperm into Scotland. If you have any uneaten sandwiches containing any meat products, you will be asked to dispose of them into the Super Heated Incincineration Treatment Equipment.

Hope it helps

Cheers

Steven