Nah. Cash back is all comparatively large notes (£5, £10, £20) and it’s mostly smaller stuff you need for making change. It vastly reduced the amount of cash they needed on site, though it didn’t really help with the need for coins to make change with.

I’m not sure they even offer cash back these days, it has been so long since I asked, and the number of cash transactions has dropped massively over the last few years.