Starting today and lasting until Sunday, Toys R Us in the UK are having a 3 for 2 sale on ALL Lego. This applies to both in-store and online. Cheapest item is free. Get in there quick as this is going to be a popular deal!
Add to that, you get a £10 voucher for spending £50 on Star Wars toys ... spendable between 24th November and 24th December. And the free 30071 with £20 of Toy Story Lego is still on.