According to PO counters more people are drawing out cash rather than using cards. This is to help with budgeting in these tough times. People find it easier to draw out an amount for the weekly bits and pieces and that's it.
It is an old trick, and it works! Cards and phone apps are just too easy, especially for impulse buys.
I have a pre-pay card to do much the same thing. I top up on Monday but If it gets to the weekend and I want a few beers and only have £2 left I have to go without.
Look after the pennies, and all that.