Reiss is a hugely powerful gymnast; he was a key member of the British team who took gold at the 2010 Junior European Championships. Reiss went on to win three medals at the 2010 Commonwealth Games.
2009 U18 British Championships gold all-around
2010 Commonwealth Games Dehli, silver team, silver all-around, silver floor
2010 Junior Europeans, gold Team, bronze high bar, bronze rings
2011 English Championships bronze medallist floor & vault
2012 British Championships 8th all-around
2013 English Championships silver all-around
2013 British Championships all-around 5th