Originally Posted by gazzam

I don't - it's Waitrose/Ocado and Sainsbury's all the way for me. Although I could possibly be tempted to switch allegiances if the mileage earning potential really is that great...

Not a big fan of Tesco, though - both as a place to shop and as an evil corporate behemoth that's contributed in quite a big way to the demise of pretty much every high street in the country - so it would have to be a good enough offering to make me compromise on the quality of my purchases AND my principles!