In 2007 we took a 3 week driving vacation through the UK.
Starting in Ireland, we circled the country clockwise from Dublin around to Northern Ireland. We then boarded a ferry and traveled to Scotland. Driving north through Loch Lomand and the highlands we made our way to Inverness and Loch Ness. (You can see a picture where I was just a second late to catch Nessie. Her trail is still on the surface of the water).
We then drove south through to London, and on to Stonehenge, Stratford-on-Avon, and Warwick. Then a quick drive through Wales to pick up another ferry taking us back to Dublin for our last couple of days on this trip.