Among 69,667 establishments there were 1,137 of total formal enforcement actions as well as 23,858 of written warnings. They were the result of food hygiene violations among which hygiene improvement notices (705) and voluntary closure (178) were the most common. There were 51 prosecutions concluded in the whole London. The size of the circle represents the percentage of written warnings compare to number of establishments. The darker the circle, the higher number of establishments.