Right now when you spend £40 on Lego at Toys R Us online you get TWO £10 coupons back - one for spending over £40, and another for spending £40 on Lego! That's £20 back for a £40 spend - sounds good to me!
Don't worry. it's not as complicated as the terms and conditions make it sound either.
Buy £40 worth of Lego from the link above. Your £10 Lego Gift Coupon will be emailed to your account on May 1st 2015. The gift coupon can be redeemed between 1st and 22nd May on Lego only. Click and collect customers will get a gift card issued on collection in store. Online coupons must be spent online, and in store gift cards must be spent in store.
The Easter £10 Gift Coupon offer works in the same way, with a £10 gift coupon being sent to your email account on 1st may. This offer applies on any purchases over £40, so if Lego isn't your thing you can still take advantage of this offer. This £10 coupon can be spent on most things in store, with a few exceptions like baby milk and gift vouchers, so you don't have to spend this on Lego either.
Thanks to jonjoe87 @ HUKD