Thanks for all your help guys, I think I will stay clear in that case.

So when looking for a bike, which good brands should I look out for?
I'm about 5 foot 10 inches, and fairly stocky build so I'm guessing I need something with a 3 piece crank?

I will also be using the bike everyday to cycle to work which is about a mile away, hence why im ditching the skateboard and starting BMX

As I know nothing atm, any pointers you can give me are really helpful.

Thanks guys.