Borobi was the mascot for the Gold Coast 2018 Commonwealth Games and will support the team at Birmingham 2022 ©Getty Images

Australia are preparing to send their "largest team ever" for an oversees Commonwealth Games when they participate at Birmingham 2022 - which are set to take place in 300 days’ time.

Petria Thomas, Chef de Mission of the Australian team, said she expected the nation to be represented by 425 athletes as part of a 700-strong delegation.

Should all team sports qualify for the event in the English city, it will surpass the previous biggest squad size for an off-shore Games of 415 athletes at Glasgow 2014.

Thomas was speaking on four-time Commonwealth Games medallist Ellie Cole’s virtual "300 days to go" show as the countdown continues to Birmingham 2022.

"We could be sending our largest team ever to an offshore Games," said Thomas.

"We are looking at around 425 so that is really exciting and the more the merrier.

"It is going to be a great experience and there will be some experienced athletes who will be going back for their second or third campaigns and even more for some of them.

"There will be some new people on the team as well, so it is always great when you get a mix of rookies and more experienced athletes.

"I am really looking forward to leading the team in Birmingham.

"We all understand that it is extremely difficult to bring that many people together for only a couple of weekends.

"My philosophy is that you treat people how you would like to be treated.

"That means saying hello when you see someone in the green and gold walk past you and sitting down with someone and asking how their day was.

"They’re the little things that can bring close to 700 people that we will have over there together and feel that they are part of something bigger."

Commonwealth Games Australia (CGA) has unveiled Borobi as the mascot for the team heading to Birmingham 2022.

The blue male surfing koala bear was the Gold Coast 2018 mascot before coming out of retirement as an animated Indigenous language champion with the Yugambeh Museum.

“We’re absolutely thrilled to say "jingeri jimbelung" to Borobi and have him as the mascot for our Australian team in Birmingham," Thomas said.

“He was so popular on the Gold Coast and having Borobi cheering in the stands and around the grounds will be a massive boost for our team and we are excited to see the energy he will bring."

CGA has also revealed the "Unity" symbol used as part of the Gold Coast Games’ Reconciliation Action Plan will become part of the team identity for the Australian team, the first stage of which has been unveiled with elements of the Unity symbol incorporated into the team brand campaign for Birmingham, entitled "Be Bold | Brave | Brilliant".

"We wanted a theme for the team – something that would resonate with all team members, something they could all identify with," Thomas said.

"So as a play on the B of Birmingham it is 'Be Bold | Brave | Brilliant'."

"The words were endorsed by a broad group, including the Commonwealth Games Australia Athlete Advisory Group and the Birmingham Team Executive – including Games gold medallists Anna Meares and Sharelle McMahon and Paralympic champion Katrina Webb.

"The campaign is what we want our team members to be - to aspire and to achieve.

"There is more to come [with the campaign], as this is just the first phase, but this sets the tone for the team."

As well as Thomas, Cole was joined on the show by boxer Harry Garside, wheelchair racer Madison de Rozario, high jumper Nicola McDermott, beach volleyball players Taliqua Clancy and Mariafe Artacho del Solar, netballer Steph Wood, squash player Rex Hedrick, bowls ace Barrie Lester and Basketball 3x3 player Maddie Garrick.

More than 5,000 athletes from 72 nations and territories are set to compete at the Birmingham 2022 Commonwealth Games, which are scheduled to run from July 28 to August 8.