Tests in the UK have reportedly shown that one in 50 bottles of wine sealed with screw caps could be ruined by sulphidisation.

The UK-based International Wine Challenge event has tested tens of thousands of wines from around the world and found 2.2% of screw top bottles were affected by the problem, which leads to a smell of rotten eggs emanating from the bottle.

The figures, reported in UK newspaper The Daily Telegraph today (16 January), could cast doubt on claims by some winemakers that screw tops are more reliable than cork.

A number of wine producers have transferred a selection of their labels into screw cap. Pernod Ricard, which owns Jacob's Creek, has said it plans to sell the Australian brand under screw cap in the UK this year.