Kate Middleton boxing
Kate Middleton tries her hand at boxing at the Heads Together mental health campaign launch in London Jeremy Selwyn/ Reuters

Kate Middleton could give David Haye a run for his money judging by her boxing skills. The Duchess Of Cambridge threw on a pair of gloves and impressed her audience at the Heads Together charity launch in London on Monday 16 May.

The Duchess, 34, was joined by her husband Prince William and brother-in-law Prince Harry at the mental health campaign opening, held at the Queen Elizabeth Olympic Park. Coached by three-time world champion boxer Duke McKenzie MBE, footage shows the Duchess throwing a few jabs into a pair of hand pads and sharing laughs with the sportsman.

Speaking after the event, McKenzie said according to the Mail Online: "She couldn't wait to get the gloves on and had a wicked punch. Boxing is fantastic for your mental state. It helps you to punch out your problems, the discipline is good and if you are healthy in body it helps you to be healthy in mind. It is also great for getting out all your stress and focusing. Working with [mental health charity] Mind is the one of the most rewarding thing I have ever done. I don't see myself as a coach or a mentor, I am just helping people work through their issues through the sport."

Prince Harry, 31, also gave boxing a try and seemed to be quite experienced at the sport with McKenzie enthusing: "Harry packs a punch. Harry was giving me the eye and I think Harry wanted to take me out but I had to let him know who the real Duke was. Harry wanted to know if I could make a return and come out of retirement and if me and him could do 10 rounds but I said, 'No, your highness, I can't do that because you might knock me out and embarrass me. He was loving every minute of it. A really genuine guy."

However, it seems Kate trumped the skills of her husband and brother-in-law as the pro boxer stated: "She's better than the pair of them because she's more technical. Ladies don't go for power. They rely on speed and technique and that generates your power."

Kate, Prince William and Prince Harry have helped to launch the mental health campaign with Heads Together in conjunction of their Royal Foundation with the aim of ending the stigma around the illness.

The Duchess looked sophisticated in a teal blue geometric Banana Republic skirt, which retails for £105, teamed with a £290 white blouse from Binky. The family had attended the Queen's 90th birthday celebrations in Windsor the night before the Heads Together launch.