Fork play.

[Bretty]

My bike has developed a slight 'knock' or looseness in the front fork.

I'm pretty sure it's not the headset as when I put on the front brake and rock backwards and forwards I can't replicate it. It's just when riding and over bumps. Is it likely to be worn bushes?

I've never had a fork apart before. What part is likely to be knackered and what other spares should I get?

Thanks,