The deal, which also covers the 2020 Games in The Hague, will see UK swimming athletes kitted out in "Fastskin performance swimwear", marked with the Invictus Games logo.

In a statement, brand director for Speedo Rob Hicking said the Invictus athletes, who are all wounded military personnel, "inspire everyone".

"The Invictus Games are at the very forefront of empowerment through sport, highlighting the resilience of our inspiring and brave service men and women," he said.

"Through this partnership, we would like to demonstrate our support to an event that supports recovery and rehabilitation, and a team that inspires everyone with their courage and optimism.

"We wish the swimmers and indeed all athletes the best of luck in their incredible Invictus Games journey."

The fourth edition of the Games, which will go ahead in Sydney from October 20 to 27, will feature around 500 athletes from 18 nations, competing across 11 sports.

The Team UK swimming squad held a training camp at the Speedo pool facility at Pentland Brands Headquarters in North London in August to help prepare themselves for the event. 

Jayne Kavanaugh, Chef de Mission for Team UK, said they are "grateful and excited" to have Speedo on board.

"The competitors are incredibly motivated and excited to train and compete in a world leading swimwear brand," she said.

The other sports on the programme are athletics, archery, wheelchair basketball, cycling, powerlifting, indoor rowing, wheelchair rugby, sitting volleyball, wheelchair tennis and sailing, which is new to the programme.

At the last Games in 2017, Team UK finished second in the medals table behind the United States, with 26 golds, 35 silvers and 27 bronzes.