Came back from Thorntons at The Fort, Birmingham, had loads of eggs at what looks like half price, and BOGOF on top! The BOGOF labels looked a bit amueterish so don't know if this is nationwide.
Got a 2 x 400g dark choc eggs for £2.99, 2 x 540g dark egg with choc selection inside for £2.49.
Think they had the 180g for £1.49, again BOGOF. Also had the 'Sporty' egg and various others.