BT Group plc (BT) is a provider of telecom services such as broadband, fixed-line, mobile, IT, and television services to homes, businesses, and the public sector. The company also sells ancillary products such as handsets, gaming, network equipment and insurance. It also provides converged connectivity solutions, managed telecommunications, security and network infrastructure services to customers across 180 countries under BT, EE, Plusnet and Openreach brand names.

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BT’s R&D arm focuses primarily on innovation. It aims to use technology in innovative ways to improve solutions, processes, and networks and to better serve its clients. The company's R&D arm aims to build a converged, sustainable, programmable, and quantum-ready network to enhance customer experience and support future technologies. It also focuses to use technologies including AI and ML so that its networks can detect threat and defend its networks to protect its customers. The company's R&D also collaborates with universities, start-ups, scale-ups, investors, governmental and publicly funded bodies to accelerate the commercialization of emerging technologies. BT filed 81 patent applications this year, bringing its total portfolio to 5,519. In FY2025, the company incurred expenses of GBP790 million on R&D, which as a percentage of revenue, stood at 3.9%.