I've put together the schedule of the times each of the large supermarkets start doing their in store reductions.
I know a lot of people post deals on here that are store specific, and can vary between stores and locations throughout the country. I also know a lot of people miss out on these reductions either because they are in the supermarket to early and most often or not, because they have arrived to late to catch these deals.
Most of these reductions are for fresh food which has a short date left on it, but is perfectly fine. I've even been lucky in the past and picked up non food items that have been heavily reduced, just because the store has discontinued the product.
The list below will help you judge when is the best time to arrive at your local/usual supermarket and hopefully grab yourself a bargain.
I will post link to newspaper artical that done a story on this to.
Supermarket rough reductions schedule
UP TO 25% OFF UP TO 50% OFF UP TO 75% AND UP
Asda Noon 5pm 9pm
Morrisons ----- 5pm 7pm
Sainburys 1pm 5pm 8pm
Tesco 8am 4pm 8pm
Co-op 8am 5pm 7pm