Career
He began officiating in 2000 at local rugby clubs in Coventry before joining the elite referee development at the RFU in 2008, and was part of the touch judge team in the 2008-2009 English Premiership. In 2010, Garner was part of the Institutional Review Board referee panel for the 2011 Institutional Review Board Junior World Championship in Italy - refereeing 4 fixtures, before refereeing the final of the 2012 Institutional Review Board Junior World Championship between hosts South Africa and New Zealand. He made his first appearance at Test match level during the 2012 end-of-year rugby union tests, where he officiated the Italy versus
Tonga match.