The 4G rollout, which offers customers speeds up to five times faster than 3G, is proving a huge success with UK businesses, including Addison Lee, Foxtons, Gatwick Airport, NHS Greater Glasgow and Clyde, Kier, Microsoft, Morrisons, Sony Music, TNT Post and Urban Outfitters, who are already reaping the benefits of increased efficiencies and productivity both in and out of the office.