Found 23rd Feb 2011
Went into Sainsbury's today to get a bottle of half-price Dow's Trademark port and they had the 25% off 6 or more bottles of wine. I loaded up on Palastri Primitivo, which was £8.99/bottle or 2 for £10, then 25% off. Went through the check-out and got the port for 25% off too! Bonus!