Great way to start the week, and now even better!
Planet of the Grapes on Bow Lane is a bar/shop. Normally you can buy a bottle from their shop and then pay a £10 corkage fee to drink in their lovely bar. To increase traffic on Mondays they've dropped their corkage fee. So you can buy a shop price bottle of wine for say £20 and drink it for £20. Bar prices are normally 2 or 3 times the price, so its normally a good deal anyway, but this is even better.