Thanks, but where would I do that? I need to short the FTSE by the way.
The reason for wanting to do this is that I have a small free bet with a spreadbetting company. The spreadbetting company will cover any loss I make on it up to a certain amount. The bet is currently in profit and I'd like to close the position out. But it makes no sense to do that when the loss cover is still there. It would be better to lock in my position with a small hedge, so I can benefit from any further gains.