French vodka may not at first seem the tipple of choice among hardened martini drinkers but many are taking a gander at Grey Goose. As the brand wings its way to the UK in September, it brings with it recommendations and high praise from bartenders in the US and Europe. Though only available in the on-trade, sales in the US are expected to top 500,000 cases in the coming year, according to Cellar Trends, the brand's UK distributor.