I bought a big bunch of fresh coriander reduced to 19p in Morrisons yesterday.  This morning I sorted through it and fished out the (few) manky bits, then spread it all out on a tray and put it in the bottom of the Rayburn for a couple of hours to dry out.  I've just scrunched it all up and put it in an airtight container.  Will be useful in my cooking for 3 or 4 weeks and much cheaper than even supermarket refill packs. 

They had fresh mint also reduced to 19p, but that was well past its best, unfortunately

Hi Ruth and welcome .

Having worked in a supermarket, I can tell you that they (and it seems to apply to most supermarkets, even the smaller Tesco Express or Co-op corner shop types) generally have 3 or 4 reductions spread throughout the day/evening.  They start off with a small price cut of around 10% in the morning, then subsequent reductions at higher percentages (the store's Head or Area office set the amounts).  Obviously, the best reduction is in the evening, but it's a matter of luck as to what is actually left by then!  Meat, if there's any left by the evening with that day's sell-by date, will generally have a massive reduction, as the store will have the price of the unsold 'waste' goods taken off their profits, so they want to sell it!

Would be worth asking a member of staff what time they do their reductions, and being there at the appropriate time to snaffle them up! 

Hope this helps.