By Jess Jones The owner of the Scotch Malt Whisky Society (SMWS) has today issued a profit warning as demand for whisky in China has slowed. In an update to markets on Friday, the Artisanal Spirits Company said it is now expecting revenues of £23m, instead of the previously forecast £25m, “due to weaker performance in China.” A new 50th anniversary member cask sales programme, launched in November, has also taken off at a more sluggish rate than expected. But the AIM-listed group said it “remains confident” it can continue to grow profitably next year, as it continues adding revenue streams. T…