Back in 2013, Bertie was selected for Canterbury Country (NZ) after receiving North Canterbury U19s Player of the Year. Following his return to the UK, he had a season playing for Surrey U20s which led to him playing for England Counties U20s in May 2014, playing two international matches against Georgia U20s.
His first professional contract was with Cornish Pirates in June 2014. He played with Pirates for two years before moving to Chinnor in 2016,which is where he has been since. He runs a successful kicking coaching business, founded in 2018, and has a broad range of clients anywhere from 7 years old to 18 years old.