The very best afternoon teas in London’s top hotels to book this Mother’s Day Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice This Mother’s Day, what better way to celebrate the motherly figure in your life than an afternoon tea? Think neatly filled finger sandwiches,