Well, haven’t you thought, that “British essay” sounds somewhat imprecise? There are too much things to speak about. History, traditions, customs, geographical position…
So, first thing you want to do is to be sure you have an exact aspect to think and write about. If it is not specified before, think of it yourself. You are welcome to use your imagination and creativity.
Use your own likes and dislikes, preferences – imagine, how many British essays have been written before! You have to be extraordinary and – well, just astonishing.
Here are some clues by essay writing service, which might make your task a little bit easier.
British food, for example. You can start with a proverb or a vivid, bright quotation… How about “To eat well in England you should have breakfast three times a day” by Somerset Maugham?