With his precious AAA credit rating lost, three weeks until the budget Osborne could probably do with a drink. This morning the Taxpayers’ Alliance have launched a new campaign to freeze beer duty. Pubs up and down the country will play host to hundreds of thousands of beer mats telling punters just how much of what they pay for their pint goes to the taxman. Something Guido imagines the Chancellor will hardly appreciate. You can add your opposition to Osborne’s beer tax here…