The way we shop has completely transformed in the past 10 years, and there is no clearer sign of this change than online brand Boohoo buying out high street giant Debenhams.
Speaking about his decision to buy Debenhams for £55m, Mahmud said: " Our ambition is to create the UK's largest marketplace. In 2006, he saw the potential of selling online instead and made the switch - with the tiny team moving their products from factory to website at lightning fast speed. Mahmud's three sons Umar, Adam and Samir are reaping the rewards by rubbing shoulders with the same US glitterati the inspired their dad's designers more than a decade ago.
Umar, 29, is running PrettyLittleThing.com - which he set up in 2012 with brother Adam - a sister fashion house which Kourtney Kardashian has been the face of as part of its drive to become a global brand.