Just received some Sparks vouchers for the first time since the system was revamped. They are for food and to be spent in store only. Half of them are dated for use in the lockdown period. As I don't have a local store using them would mean undertaking an unnecessary journey.
Obviously I'm not intending to use them but this strikes me as pretty irresposible as I expect many others would be tempted to take the drive passing multiple alternative supermarkets on the way.