Advantages of trading forex via a company?

I have been researching forex and am thinking of trading via a Ltd company.

I understand that as a UK resident this is more advantageous in terms of tax, as I could draw dividends after paying corporation tax on any profits.

Any possible downsides?

I am thinking of opening up a trading account in the name of my existing personal contractor company.

Thanks!

Advantages of trading forex via a company?