> The national minimum wage does not apply to company directors unless they have contracts that make them workers as defined in section 54(3) of the act.
I suggest if you are a single freelancer in the UK you may easily fall foul of that. Remember employment contracts can form without you writing them down. I know of cases where this has happened. If you only come into work for board meetings then sure, avoid minimum wage.
But then if you are a single freelancer in the UK you will already be talking to an accountant to discuss IR35...