The appointment was officially announced yesterday, after months of speculation about who would take over from Dr Anderson on his retirement. His job, which is regarded as one of the most prestigious school posts in England, was advertised last summer. Among those tipped to take over was the current Minister of Public Service and Science, William Waldegrave.
The new incumbent is currently the headmaster of a school which was once attended by Prince Charles and Rupert Murdoch.
Mr Lewis holds a double first in classics from Corpus Christi College, Cambridge, and taught at Eton between 1971 and 1980. He was known as a distinguished rugby player and cricketer, and during his previous period at Eton he spurred his charges on to win sporting trophies.