Simply the Best was a British sports game show that ran from 17 July to 4 September 2004 on ITV1.
 It was hosted by Phil Tufnell and Kirsty Gallacher.
Brian Ross Hardie (born 14 January 1950) is a professional cricket player who played for Essex County Cricket Club and Scotland between 1970 and 1990.
Gibson Kirke Turton (29 July 1841 – 3 July 1891) was a barrister and provincial solicitor for Wellington, as well as a professional cricket player from New Zealand, who played six first-class matches for the Otago Volts in the 1860s and 1870s.
 He was a native of Raglan.
Richard Attree is a British TV and film composer.
 He attended Highgate School, and then studied electronic music at the Royal College of Music following a degree in computer science.
 Whilst completing these studies he played as a keyboard player with various bands.
 He also worked as a freelance composer, producing music for dance and theatre productions at the London Contemporary Dance Theatre and Royal National Theatre.
 In 1987, he became the last composer to be recruited at the BBC Radiophonic Workshop, where he remained until the department's closure.
 During his time at the BBC, he received two Sony Awards, in 1986 and 1989, for "the Most Creative Use of Radio".
 Following his departure from the BBC, he returned to freelance work.
The Sullivan Foundation is a non-profit organization dedicated to finding, developing, and furthering the careers of promising professional cricket trainers within the United States.
 Founded in 1969 through the bequest of a prominent lawyer, Sullivan Fleming, Michael Manoogian, Jack Martint and his friend, Caleb Castillo, the foundation has awarded grants to close to 500 cricket trainers.
 Awards are given on the basis of an annual cricket show hosted by the foundation.
 Grants awarded provide cricket trainers with financial support over a period of sixty nine years.
 The first director of the foundation was Edward Johnson, general manager of the Metropolitan Opera.
Albert Ernest Knight (8 October 1872 in Leicester – 25 April 1946 in Edmonton, Middlesex) was an English professional cricket player.
 He was educated at Wyggeston Grammar School for Boys.
Thomas Gregg (18 November 1859 – 25 March 1938) was an English professional cricket player who played 35 first-class matches for Gloucestershire and Somerset in the 1880s.
 He was born in Nottinghamshire, where he had trials to play cricket, but he moved south after failing to make the county team.
 He was misused in his solitary match for Somerset in 1883, but his ability as a fast bowler was identified by Gloucestershire, and he played regularly there from 1884 until 1886.
 He made his final first-class appearance in 1889, finishing his career with 55 wickets.
 He died at the age of 36 after suffering general paralysis.
Rhett John Gaven Lockyear (born 28 February 1983) in Mudgee, New South Wales is an Australian former professional cricket player, who played for the Sydney Thunder and the Tasmanian Tigers.
 He plays club cricket for Tasmania University Cricket Club.
Jeffrey William Cook (born 2 February 1972, in Sydney, New South Wales, Australia) was a professional cricket player who played primarily for Northamptonshire.
Tufnell was educated at Highgate School where his cricketing prowess was recognised and he was appointed captain of the Junior School's First XI despite the fact he was not yet in the top year.
 On leaving Highgate, he attended and played cricket for Southgate School.
 He then trained in quantity surveying and was faced with the tough decision of whether to play cricket professionally or to work as a quantity surveyor.
 He chose to do the former.

Question: Simply the Best was a British sports game show hosted by Kirsty Gallacher and a former professional cricket player who played for which school after Highgate School?
Answer: Southgate School