London tunnels upgrade to save BT £1.5m on energy

BT expects to save £1.5 million on energy costs through the upgrade of its network of tunnels under London. The project will also save 350,000 tonnes of CO2, it added. The communications firm has awarded a £3.3 million contract for improvement works on 23km of its tunnels to multi-technical services firm SPIE UK. It will […]