leigh francis (born 30 april 1973) is an english comedy performer best known for his portrayal of foreign celebrity-obsessed character avid merrion in channel 4 comedy programme "bo' selecta!", as well as northern businessman keith lemon in "keith lemon's very brilliant world tour" and "celebrity juice". as keith lemon, he has also made many appearances on "big brother's" companion shows "big brother's little brother" and "big brother's big mouth".