Will Smith has taken on a shift at Boots to promote his ethical water brand JUST Water and its expansion into the UK market.

The Men in Black star was pictured handing out meal deals at the Westfield White City branch of Boots to celebrate the fact that JUST Water, which he co-founded with his son Jaden Smith, is now available at Boots and Whole Foods stores UK-wide. He posted on Instagram 'A few years ago My Son, Jaden started a company, setting out to make bottled water a little safer for our world. I’m proud to say, this week we’re expanding outside America with @JUSTUK! We’re on shelves at @BootsUK + @WholeFoodsUK Right This Second!! Go get u a bottle and send me a pic!'.