Firefighters are battling a huge blaze at a factory and offices in Chantry Place, Harrow .
London Fire Brigade (LFB) was called to the scene just before midnight on Thursday (September 14), with crews expected to remain at the scene well into Friday morning.
Twelve people were evacuated from nearby properties as a precaution.
A firefighter said trains at nearby Headstone Lane station had been stopped.
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Headstone Lane has re-opened in both directions following the earlier building fire.
The road had been closed since 12.40am after a large warehouse fire in Chantry Place, Harrow.
It re-opened at 5.30pm.
Buses have also returned to their normal routes.
For our report on the inferno here: http://www.getwestlondon.co.uk/news/west-london-news/harrow-fire-homes-evacuated-over-13623059
You can also read what the owner had to say
Thank you for joining us throughout the day.
Diversions in both directions
Sorry to say there’s still no improvement to bus services in the locality
Harrow bus routes are still on diversion
Rail services up and down the country affected
Rail services nationwide are effected. National Rail recommended customers check services before they travel.
- Caledonian Sleeper between Glasgow Central / Edinburgh / Inverness and London Euston.
- London Midland between Northampton / Milton Keynes Central / Watford Junction / Rugby / Birmingham New Street / Crewe / Tring / Bletchley / Coventry and London Euston.
- London Overground between Watford Junction and London Euston. Southern between Milton Keynes and Balham / East Croydon / Clapham Junction / South Croydon.
- Virgin Trains between Edinburgh / Glasgow Central / Liverpool Lime Street / Manchester Piccadilly / Chester / Birmingham New Street / Wolverhampton and London Euston.
Train lines RE-OPEN after blaze affects track
Euston station will re-open at 1pm with trains running on an amended timetable.
The owner of the warehouse looked on in 'shock' at the scale of blaze
Mr Pindoria, the owner of Pacest Joinery, expressed his concerns for his 14 employees who are now without work as he watched firefighters dampen down debris.
You know how I said that huge vehicle was being brought in to stabilise the wall... I was wrong.
Very wrong as it happens, as it wasn’t quite stabilising the wall.
It was doing the opposite.
As this video from National Rail shows
Travel delays elsewhere
Repair work has begun
According to London Midlands on Twitter, repair work has begun on repairing the wall.
This video from Kat shows a vehicle being used to stabilise the wall.
This beast has just rolled into town
Kat has been told there are fears the damaged wall beside the railway lines could collapse.
So this vehicle has been brought in to stabilise it.
Some of the images from the fire
This video shows the damage caused to Pacestar Joinery
Firefighters dampening down
Images from the scene this morning
Other photos captured by our Kat show roads sealed off and emergency services still at the scene.
getwestlondon reporter Katherine Clementine is at the scene in Harrow and taken this picture of Pacestar Joinery.
A member of staff has confirmed it was damaged in the fire.
Video captures explosion
A little (if not immediate) help for commuters
Virgin Trains has lifted ticket restrictions meaning passengers can use services on alternative routes or travel on Saturday (September 16).
A spokesman said: “We are sorry for the inevitable disruption and delays to journeys.”
Flames, smoke and a HUGE explosion
This dramatic video shows the battle faced by firefighters
Bus delays and diversions
And it’s not just train passengers who are affected...
Footage shows raging flames
The video showing roaring flames can also be viewed here.
Video from the scene
Advice for rail passengers
Addressing the impact on rail users, the statement continues:
The West Coast main line will remain shut between Euston and Milton Keynes while these repairs are made.
“Passengers wanting to travel on the West Coast main line and West London Line are urged to check with their train operator or nationalrail.co.uk before travelling.
“They will be diverted on alternative routes.”
Repairs to 'take all day'
Network Rail say repairs are expected to take all day.
It said in a statement:
A fire overnight at a timber yard in Harrow has damaged a trackside retaining wall.
“It will need to be dismantled, made safe and rebuilt.
“This is a big job expected to take all day.”
Timber yard fire
London Euston station has tweeted that the fire has broken out in a timber yard.