Tesco WBTC 20% off 2 Or More Cases Written by Charlotte.Fleckney on September 19, 2016. Posted in Offers/Promotions, Promotion Dear affiliates, Tesco WBTC are running a special promotion offering 20% off 2 or more New Zealand wine cases. *Offer date: 19/09/16-03/10/16* If you have any questions, please contact us on tesco@affiliatewindow.com Thanks, The Tesco Affiliate Team