Leaked video shows runaway Tube

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Video showing how close a runaway London Underground train was to a full passenger train in front has been leaked to BBC London.

The footage of a control room monitor appears to show the runaway engineering train close behind the other vehicle as they pass Kentish Town.

A highly placed source said the two trains were just 49 seconds apart during the incident on Friday morning.

Transport for London said safety was its top priority.

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