Watch the huge queue rail chaos caused at Finsbury Park

The North London station was temporarily closed yesterday as passengers were diverted from King's Cross

Travelers are locked out of Finsbury Park station, London, where they were directed to go as trains in and out of King's Cross have been cancelled (PA)

Video from Finsbury Park station in North London yesterday shows the full extent of the travel chaos caused due to overrunning engineering work on the first weekend after Christmas.

Britain's railway watchdog will now investigate Saturday's travel nightmare which saw King's Cross station closed to all trains, causing services to be diverted to Finsbury Park.

However, the North London station - tiny when compared to the national hub of King's Cross - could not handle the influx of passengers and had to be closed because of overcrowding. It eventually reopened later in the day but travellers still compared Finsbury Park to a "war zone".

A video taken from what appears to be the top deck of a bus travelling along Seven Sisters road, shows a queue emerging from Finsbury Park station and trailing around the corner for several hundred yards.

Over-running engineering work at King's Cross meant no trains could depart on Saturday, moving reduced services to Finsbury Park, where buses were taking passengers to join trains running north to Leeds, Newcastle and Scotland.

Services in and out of King’s Cross are now running, however rail journeys to and from Paddington are currently experiencing delays of up to 15 minutes until later this morning. Service disruptions at other rail stations across the UK have been cleared however it is advised to check departure boards before travelling.