What a treat this is! There are a whopping 6,000 vouchers ranging between £2 and £1,000 - redeemable at Costa Coffee. You can get a coffee, a nice croissant or even a frappe!
To get yours all you need to do is complete a surrvey based on TV shows such as Eastenders and some of your favourite Netflix series. I actually really enjoyed it and got my voucher emailed within a week!
Unfortunately, the offer you were looking for has now expired. Sorry!