Who is the most successful person on the TV show "Eggheads" and what are the details of their wins and losses?

The Eggheads:
Christopher Hughes - Winner of Mastermind, International Mastermind and Brain of Britain
Daphne Fowler - Twice winner of Fifteen to One and winner of Brain of Britain and Going for Gold
Kevin Ashman - Winner of Fifteen to One, Mastermind and Brain of Britain
Judith Keppel - First British winner of one million pounds on Who Wants to Be a Millionaire?
CJ De Mooi - Winner of Fifteen to One, Brainteaser and The Weakest Link
http://www.tv.com/eggheads/show/22516/summary.html


Kevin Ashman currently competes on the British quiz show Eggheads, alongside other quiz champions, in which members of the public pit their wits against them in order to win a cash prize. He also takes part in the show Are You an Egghead? alongside his Egghead team mates in a competition to find a sixth member of the Egghead team. He is frequently the first choice to assist players.
https://en.wikipedia.org/wiki/Kevin_Ashman