Severe delays on two Tube lines with icy conditions set to impact journeys again

Commuters taking the District or Piccadilly Tube lines should prepare themselves for a longer than usual journey to work (Picture: In Pictures via Getty Images)

Two London Underground lines are running with severe delays this morning.

Commuters taking the District or Piccadilly Tube lines should prepare themselves for a longer than usual journey to work.

The District line is reporting severe delays while engineers work to fix a faulty train at Upminster, while the Piccadilly...