Jack Dickinson says:
Here's my motorway tips-
Check your blind spot when changing lanes, very important!
Don't hog the middle lane or outside lanes
People are mental, remember that, as you'll notice it plenty on a motorway
Play loud music
Also, watch for lorries. If you drive a small car, they often cant see you. The first thing they will know about you existence is when they plough into you and flip you into the central reservation and back across 4 lanes of traffic into a ditch.