Brother of Glasgow Warriors hooker Kevin Bryce, Glenn moved to Scotstoun as part of the Elite Development Programe, after spells with Jersey and Doncaster.
Glenn joined the Knights from Jersey RFC having been at the Channel Island club since 2011 where he signed as one of their first fully professional players.
Prior to joining Jersey Glenn's performances for Heriot's earned him a call up to the Scotland under-20 squad for the 2011 Junior World Championsip. He played in all five of Scotland's matches in that tournament.
He then added to his international honours with a call-up to Scotland 7s for the 2015 London 7s, the last leg of the 2014/15 HSBC Sevens World Series. He scored two tries at that event against Australia in the Cup quarter-finals, with his obliterating step playing a significant part in the build up to both scores.