The Bakerloo line is baking, with temperatures in its central London tunnels exceeding 32 degrees.

ECONOMIST: London Underground

Two previous strikes have been held at Bakerloo Line and Northern Line depots over the issue.

BBC: Tube strikes over sacking of two drivers called off

There are partial suspensions on the Central, Bakerloo, Jubilee, Piccadilly, Metropolitan and District lines.

BBC: Heavy snow disrupts London travel

TfL said the Bakerloo, Central and Victoria lines were running services through central London during the day.

BBC: Boxing Day Tube services disrupted by drivers' strike

Police have now released CCTV images of Speight boarding a southbound Bakerloo line Tube from Queens Park station.

BBC: Police spoke to missing presenter

Workers on Bakerloo and Northern lines were to walk out on Sunday night but the RMT plans to hold further talks.

BBC: Tube strikes over sacking of two drivers called off

There were severe delays on the Bakerloo line and minor delays on the Jubilee line due to a signalling systems failure.

BBC: Paddington rail service returns to normal