Thousands of Londoners are likely to face severe train delays until the end of the week following "extensive" damage to overhead power cables.
The problems at Radlett in Hertfordshire have affected the services of three train companies in the capital.
Paul Brand has been speaking to Mick Cash from the RMT union and to passengers affected by the delays.
More top news
The show is on a nationwide tour before it arrives in London.
They took part in a clinical study using genetically engineered tissue implanted into the eye.
A statement from McPartlin's publicist confirmed that this week's Saturday Night Takeaway will no longer run.