The 28-year old made his Super Rugby debut in 2010 for the Waratahs in Sydney before going on to play 25 matches with NSW between 2010 and 2012. He scored his maiden Super Rugby try in the Waratahs 41-7 win over the Brumbies in 2011.
Alcock moved to the Western Force in 2013 and played 31 matches for the Perth-based franchise, his final match being against the Brumbies at GIO Stadium in the final round of the 2016 Super Rugby regular season.
The South African-born flanker says he’s very happy to be linking with the Brumbies for 2017 after four seasons in the west.
“I think it’s going to be a good change, I’m looking forward to the opportunity,” Alcock said.
“The Brumbies forward pack is really physical and go about their business really well, so I just want to come in and join in as best I can.”