Can an American citizen open a restaurant buisness in London?

what does an American have to do to open a restaurant in London. I would like the option to perhaps open a good Mexican joint in London. Perhaps import certain Mexican products, and try a small business in a down town area. Everybody loves Tacos.

you need to figure out what you need to do to get a business license in london.
find out what you need in order to open up a business in london.
find a place where you want the restaurant to be.
make an agreement with the owner to lease the place.
make connections with people.