A fire in a utility tunnel has caused "significant disruption" in central London this morning. About 70 firefighters are at the scene on Theobalds Road, near Holborn station. The London Fire Brigade described it as a "prolonged operation" due to the complexity of the incident, which involves an underground electrical tunnel containing high-voltage cables. Videos on social media show thick smoke billowing from several road vents. The brigade said some bus routes had been diverted and has advised