By Michael Holden LONDON (Reuters) – Britain’s King Charles III will be crowned at London’s Westminster Abbey next May in a ceremony set to follow the traditional pageantry used for anointing monarchs over the last 1,000 years, Buckingham Palace announced on Tuesday. Charles, 73, automatically became king on the death of his mother Queen Elizabeth last month, but the grand coronation ceremony for him and his wife Camilla, who will be crowned queen, will now take place on Saturday, May 6. “The coronation will reflect the monarch’s role today and look towards the future, while being rooted in lo…