So Practically, for a UK residence you need to pay 18% of the net gain in the financial year minus the individual allowance of £10,100 ?
So if I make 1,000 trades between 5th April 2009 and 5th April 2010 and I start with £500 and end up with £20,000 (I'm optimistic) I'll owe 0.18 * (19,500 -...