If you have taken part in the Study, you should have received a gift card, in appreciation of your time and effort. Cards are supported by our partner, bonfire. 

• Your gift card will be active and ready to use in store or online anywhere Mastercard is accepted.
• To make a purchase in store, swipe the card, select credit and enter the pin number under the silver scratch panel, on the back of the card
• To check your balance or read the T&Cs, head to the bonfire website and click on the My Account/Balance button, alternatively call 0800 86 44 38 (fees apply).