Originally Posted by the stig

The way to exploit (for want of a better word)the Shell to BA/Avios points is to have a card for each family member feeding points into a household account. Only buying fuel when the Quarterly bonus offers (ie 200 points for 2 X 30 litre fill ups)are either mailed to you or via email which need activation.At other times buy at Tesco using your Tesco credit card as a clubcard and paying with Amex to maximize the miles.