Company showcase: BT Group
The telco invested £470m in R&D last year.
Website: btplc.com
Head office: BT Centre, 81 Newgate Street, London EC1A 7AJ
Number of employees: At 31 March 2016, we had 102,500 full-time equivalent employees in 61 countries, with 81,400 based in the UK. This includes 12,800 who joined the group as part of EE