Last weeks Sun (Saturday) had a voucher in for £10 of Toys when spending over £40.
I just went into Tescos and used this voucher getting Guitar Heroes with guitar for £40 (currently on offer there and at Argos for £50).
The coupon did not scan so the checkout girl called over the supervisor who went off to check and told the checkout girl to scan it through as a 'non scan item'.
As a further bonus, since this originally went through till at £50, I got 5p off petrol voucher as well!
This was in the Great Yarmouth branch