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Terry Camilleri, 19 january 1974, Malta
Qualified as referee: 1990
Highest break: 70
Has refereed his first ranking tournament final at the 2007 Malta Cup between Shaun Murphy-Ryan Day
Paul Collier, 30 july1970, Newport
Qualified as referee: 1991
Has refereed the World Championship final in 2004
Alan Chamberlain, 1 january 1943, Market Harborough, Leicestershire, England
Qualified as referee: middle of 1960's
Highest break: 80
Has refereed the World Championship final in 1997
Colin Humphries, Netherley, Liverpool, England
Qualified as referee: 1988, professional since 1994
Highest break: 68
Olivier Marteel, 10 may 1969, Nieuwpoort, Belgium
Qualified as referee: 1994, professional since 2006
Highest break: 133 (practice), 78 (official)
Has refereed the World Championship final in 2015
Brendan Moore, 17 february 1972, Sheffield, England
Qualified as referee: 2002, professional since 2005
Highest break: 63
Has refereed the World Championship final in 2014
Michaela Tabb, 11 december 1967, Bath, England
Snooker:
Qualified as referee: 2001(class 3), professional since 2002
Highest break: 26
Has refereed the World Championship final in 2009,2012
Pool:
Referee since 1997
Professional player since 1991
Trophyes won: 1997 UK Champion, single
1998 European Women's Pool Championship
1997 Nations Cup, European Championship, World Championship with team Scotland
1998 Nations Cup, European Championship, World Championship with team Scotland
Leo Scullion, 10 april 1958, Glasgow, Scotland
Qualified as referee:1984 (class 3), professional since 1999
Highest break: 93
Jan Verhass, 5 october 1966, Maassluis, Netherlands
Qualified as referee: 1990 (class 3), 1995(class 1), professional since 1993
Highest break: 78
Has refereed the World Championship finals in 2003,2006,2008,2011,2013
Eirian Williams, 3 september 1955, Carmarthen, Wales
Qualified as referee: 1981, professional since 1991
Has refereed the World Championship finals in 2001,2005,2007,2010
Peter Williamson, 26 july 1948, Broadgreen, Liverpool, England
Qualified as referee: 1970's, professional since 1991
Highest break: 57
(Ivy) Zhu Ying, 25 may 1982, Shanghai, China
Qualified as referee: professional since 2010
Highest break: 40