I may be of the British Isles decent but I do not believe they are the only ones who do that. It is how I was taught to eat a proper meal when it was the proper occasion. Ok, that sounds bad but there were meals we just ate with forks in our right hand or via our fingers.
Until I read this question, I had never really thought about it just being a British way of eating. I guess I am ready to dine with the Queen!