BT is a leading British telecommunications company with headquarters in London. Its roots go back to 1846 with the founding of the Electric Telegraph Company, which went on to develop a widespread communications network and was re-branded to British Telecom in 1980. The company is one of the largest providers of broadband and mobile services in the UK and has a global presence in over 180 countries. BT operates a multitude of subsidiaries within the fields of mobile technology, broadband, and IT network services, such as EE, BT Mobile, PlusNet, and Openreach. BT stock is listed on the London Stock Exchange and is a constituent of the FTSE 100 index. Start spread betting or trading CFDs on our BT share price.