How many people practice karate?

As a matter of fact, it is virtually impossible to know about this. Maybe there are some polls held that can give answer to this question. Karate has spread throughout the world (even England as it is one of the important countries). As per 2011 census, population of England in 53.01 million with people from different parts of the world living there. So, maybe there are thousands of karateka in England.