Speaking from personal experience for a newbie to the left side of the road, whatever you do, DON’T fly non-stop San Fran to the UK and get all jet-lagged, rent a car at the airport, and make a right turn at a stop sign at an intersection. It was a real come-to-Jesus moment, I tell you.
After a good night’s sleep, you get the hang of it. I would have felt a lot safer in a huge Humvee instead of the little econocar I had.
I’m glad you survived!