Boxing, mixed martial arts and tennis are the hardest sports to train for.

Through crowdfunding anyone can find companies and products.Forming a partnership with innovative British businesses was appealing and the opportunity to go on a journey with these companies as they grow, and hopefully share in their future success, is exciting.

Normally I sleep for 9, 10 hours a night.

Of my investments that have been realised, buying my first house turned out to be a pretty good move, which I didn't really realise at the time.

I've realised over the years I play my best when I have time to prepare for each tournament as best as possible.

I've been asked a lot lately if tennis is clean or not. I don't know any more how you judge whether a sport is clean. If one in 100 players is doping, in my eyes that isn't a clean sport.

I am not anti-English, and I never was.