LONDON (AFP) - Prince Charles on Wednesday become the longest-serving heir apparent in British history, having waited to take over from Queen Elizabeth II for 59 years, two months and 14 days. Just days before his eldest son Prince William marries his university sweetheart Kate Middleton, Charles has overtaken the record set by his great-great grandfather king Edward VII. The prince became heir apparent when his mother, the then princess Elizabeth, acceded to the throne to become queen on February 6, 1952. Edward VII was born the heir apparent on November 9, 1841 when his mother, queen Victoria, was already on the throne.