I ran this deal yesterday and thought it had expired but I have just been to the site and it appears to be still going. Do check though!
Free delivery on everything plus spend £10 and get £5 off using 510FEB
I'm told by other posters you can get Quidco for this but for anyone who doesn't have it, why not get Nectar points? Most of us have a Sainsburys card and you can build up loads of points through online dealers.