In store only
Vouchers are inside leaflets to be found at BabyFare / Baby aisles,which most if not all Tesco's are having at the moment.
Collect 100 extra points when you buy the 63 pack of Pampers Natural wipes,but as they are BOGOF,you can collect 200 points for same price as it states on voucher per product purchase,just did it myself and worked fine.
Also 100 extr points voucher for using with Pampers and active nappies too.
Will scan voucher...leaflet has mother and baby club logo on it.