Susanna Siddell
Guest Reporter
A fire which has broken out near Heathrow Airport has sparked total chaos as "severe delays" have hit a major London network - throwing people's holidays into disarray.
London Heathrow announced that it would be shut the entire day after a huge fire blazed across a close by electrical substation, causing a mass power outage and thousands of delays across the capital.
So far, around 1,351 flights have been disrupted ahead of the weekend, as Europe's busiest airport is shut down, while commuters face a troublesome journey into work on Friday morning.
The Elizabeth, Jubilee and Central lines are all experiencing severe and minor train delays as a result of cancellations throughout the morning.
Currently, the Elizabeth line is entirely suspended between Hayes and Harlington and Heathrow.
Huge disruption is expected on mainline trains travelling towards London Heathrow, while other major London lines and stations have not yet reported any further delays.
Currently, the M4 towards the hub is reportedly closed southbound between the M4 and J4A as a result of the overnight blaze, causing early morning commuters absolute chaos.
"Significant disruption is expected over the coming days," a Heathrow spokesperson said.
LATEST DEVELOPMENTS:
Meanwhile, Heathrow Express has suspended its entire service for the day.
Earlier this morning, the official account for the line shared online: "No services in either direction due to a fire alert at a station. Due to a fire at a nearby electrical substation, Heathrow Airport is CLOSED until further nothing.
"Please DO NOT ATTEMPT to travel to the airport under any circumstance."
MORE TO FOLLOW...
Find Out More...
London Heathrow announced that it would be shut the entire day after a huge fire blazed across a close by electrical substation, causing a mass power outage and thousands of delays across the capital.
So far, around 1,351 flights have been disrupted ahead of the weekend, as Europe's busiest airport is shut down, while commuters face a troublesome journey into work on Friday morning.
The Elizabeth, Jubilee and Central lines are all experiencing severe and minor train delays as a result of cancellations throughout the morning.

Currently, the Elizabeth line is entirely suspended between Hayes and Harlington and Heathrow.
Huge disruption is expected on mainline trains travelling towards London Heathrow, while other major London lines and stations have not yet reported any further delays.
Currently, the M4 towards the hub is reportedly closed southbound between the M4 and J4A as a result of the overnight blaze, causing early morning commuters absolute chaos.
"Significant disruption is expected over the coming days," a Heathrow spokesperson said.
LATEST DEVELOPMENTS:
- Heathrow Airport closed ALL DAY as huge fire sparks holiday chaos with 1,351 flights cancelled
- Disabled passengers abandoned on train for FIVE hours as staff 'ignored' pleas for help
- M25 to close for days as drivers told to ignore sat-navs or risk being stuck in 'long traffic jams'

Meanwhile, Heathrow Express has suspended its entire service for the day.
Earlier this morning, the official account for the line shared online: "No services in either direction due to a fire alert at a station. Due to a fire at a nearby electrical substation, Heathrow Airport is CLOSED until further nothing.
"Please DO NOT ATTEMPT to travel to the airport under any circumstance."
MORE TO FOLLOW...
Find Out More...