Just noticed this on Tesco.com, that with effect from Thursday 19th to Sunday 22nd February, selected Medium easter eggs are Half Price from £1.99 to 99p.
The following eggs are included:
Cadburys Creme Egg
Cadburys Dairy Milk with Caramel
Cadbury Mini Eggs
Nestle Kit Kat
These are the standard egg + 2 bars. A penny cheaper than Asda's previous offer, and Sainsbury's offer, and also covers such a large range!! Good deal.