[simonh]

I take it they're separate accounts.

[ljm]

You can basically just sign up for an account with Revolut, Monzo, or Starling and use it purely for spending.

Keep your primary account for getting paid, and for covering bills, then load up the second account with play money for the month.

I know a few people who do this.

I just use an AmEx account but it's a little frustrating that you can't set a spending limit on the card.