Slade plays for Exeter Chiefs in the English Premiership. He was dual-registered to Exeter Chiefs and Plymouth Albion in the 2011/2012 season. He has also represented England at U18 and U20 level, Henry made his debut in for the Under 18s on 22 July 2010. England Academy coach John Fletcher once said of Slade "the way he plays reminds me of a young Toby Flood or Rory Clegg."
Slade made his Premiership debut against London Irish on 13 April 2013 coming off the bench to replace Gareth Steenson, Slade scored his first premiership points in this game kicking over a conversion following a try from Dave Ewers. Slade made his debut for England in a match against the Barbarians on 1 June 2014, kicking 15 points and putting in an impressive performance.
Henry attended Plymouth College and is now at University of Exeter reading for a BSc in Sports & Exercise Science.
Slade is the great nephew of former Portsmouth F.C. footballer Geoff Williamson.
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