I am reminded of a former Burgundy producer, much loved on this forum, all of whose wines happened to come in at the same 13% abv he happened to have printed on the only batch of back labels he ever produced. Truly a vinous miracle.The problems were all highlighted by both the UK wine trade and English wine producers. The argument being that wine production doesn't allow for alcohol levels to be managed or kept constant, unlike beer and spirits. The government was told that what that meant was that different vintages, and sometimes different lots, of the same wine would have different alcohol levels. That different countries have different tolerances on alcohol levels on the label. That bond stores have millions of bottles where the alcohol levels are not recorded in their systems.
The government, in their wisdom, responded thus
"The Government does not agree that the characteristics of wine and wine production are different enough from other beverages to justify an alternative duty system."
They have granted an easement on wine made from fresh grapes until 2025. From then on, we're all planning to label our wine at 12.5% for the UK market