To use your Clubcard coupons in the Tesco app, select which coupon(s) you want to use at the payment section of the checkout. If you'd like to remove any from your shop, select the coupon(s) again and click the 'Remove from online basket' option.
To use your Clubcard coupon codes online, select the ones you want when you get to the 3rd stage of checkout titled 'Review and checkout'. To remove them, untick the code(s) at the checkout. Please note that Clubcard coupons can't be used on Tesco Marketplace.
You can only use one coupon starting with an X in your order, unless otherwise stated.