Let's be honest, most expensive wine is not worth a case (as in twelve) or two of well chosen cheap wine.
With predatory buying policies and bulk wine shipping to the UK to avoid the taxes you and I would normally pay you can often buy a better wine for the money than you can where it was grown and produced.
With minimum wage staff who normally drink WKD or White Lightning stocking shelves there's good wine and bargains to be had. Italian wine in particular has improved leaps and bounds whilst France and the rest of the Old World have lagged behind living on overblown reputations and banker's bonuses.
Now say Hello to the wine tasters of Secret Squisito who sacrifice their hard earned cash to sort out the trash from a good splash!