Ok, healthy living mailing arrived today and as well as some nice points offers (50 points just for turning up ) the leaflet detailed one I hadn't seen before

Collect 1000 extra points on your first shop at tesco.com

I know i've never shopped there - am now desperately trying to remember if I've made any other one-off purchases - ah it's only for groceries

Details:

To receive 1000 extra Clubcard points in your August statement, you must register online with the Clubcard linked to your card, and spend £50 or more on groceries on your first shop at www.tesco.com/superstore. Offer valid on deliveries between 11/04/05 and 08/05/05. The £50 minimum spend excludes purchases of tobacco products or infant milk formula. Purchases from the Tesco.com Extra sites do not qualify. Offer valid only for recipients of this mailing.