[4][5] The following season saw Slade start for the side that beat Northampton Saints in the 2014 Anglo-Welsh Cup final to win Exeter their first major trophy in their history.

[6] In May 2017 Slade came off the bench for the Exeter side that defeated Wasps in the Premiership final to become champions of England for the first time in their history.

[12] England Academy coach John Fletcher once said of Slade "the way he plays reminds me of a young Toby Flood or Rory Clegg.

[18] He was included in the preliminary training squad by coach Stuart Lancaster for the 2015 Rugby World Cup and on 15 August 2015 won his first cap for England, partnering Sam Burgess in midfield during a warm-up victory over France.

[20] A broken leg suffered playing for Exeter in December 2015 meant Slade did not feature for new coach Eddie Jones until the 2016 autumn internationals against Fiji and Argentina.

[32] Later that year he scored a try in an Autumn Nations Cup match against Wales and then started in the final of the competition as England defeated France in extra-time to lift the trophy.

[33][34] During the 2022 Autumn internationals Slade played in a draw with New Zealand and then scored a try in their next match against South Africa in what proved to be the last game in charge for coach Eddie Jones.

[37] Slade's mother is Jayne and he is the oldest of three boys, his brother Seb (b.1995) is an actor, and the youngest, Albert (b.2000), is a rugby player and student.