Sales of British wine have surged over the last year, causing a headache for English and Welsh wine producers. Figures released by analyst Nielsen show that value sales of British wine – as distinct from English and Welsh wine - have risen by 45% over the last year to £26m, with a 30% rise by volume. This has led to increased concern amongst English and Welsh winemakers that consumers are confused by the two styles. There is a clear technical distinction between British wine, which is made from imported grape concentrate and fermented and bottled in the UK, and English and Welsh wine that is grown in a defined region.