Could anyone help me with getting food vouchers in the UK? Like a supermarket gift card or something?

I've spoken about my financial problems on here before. Basically I'm going through a disability benefit appeal and have no money. The food bank is difficult to access regularly and it takes a long time to get an appointment. A couple of people on here have helped me out before with food, toilet paper and some toiletries for which I am so grateful. But I'm out of food now and have no means of accessing more. I would prefer not to accept money as the DWP (the nazis who run the UK benefit system) are checking people's bank and paypal accounts and how will I explain money going in. So I would be extremely grateful if anyone could give me any type of food vouchers that can be used in the UK. Like a supermarket voucher for Sainsburys/Asda/M&S or Tesco. Or a justeat voucher. Anything I can spend on food.