Apart from 'don't', I have to do the above.
My Barclay Card charges a 2.99% fee per withdrawal and then 29.9% interest, with cash withdrawals last to be paid off a balance.
To avoid being hammered with interest I have opened two new 0% cards, with balance transfer fees of 0% and 1.5% respectively, to which I plan to immediately transfer my Barclay Card balance after withdrawing the cash.
I'm withdrawing £1000 cash so should be looking at just over £30 in charges for this.
Is there a better way to generate cash from a credit card?