London travel news LIVE: Severe delays on Piccadilly Line to Heathrow Airport due to signal failure

There were severe delays on the Piccadilly Line, including on trains to Heathrow Airport, at lunch time on Friday due to a signal failure at Caledonian Road.

Earlier on Friday the Metropolitan Line was part-suspended due to flooding as heavy rains fall across London, with no trains running between Chalfont & Latimer and Chesham.

Commuters also faced severe delays at rush hour on Friday morning on the Overground and District Line due to track faults at Kew Gardens and Clapham Junction.

Live updates below.

Trespass incident hits routes to Salisbury

19:13 , Josh Salisbury

A trespass incident is affecting the railway at Salisbury, South Western Railway has said.

Trains may be cancelled, delayed or revised because of this problem. Disruption is expected until 10pm.

Metropolitan Line delayed

18:49 , Josh Salisbury

The Metropolitan Line is also now delayed.

]TfL says there are severe delays while engineers fix a signal failure at Harrow-on-the-Hill.

Severe delays continue on three Tube lines

18:42 , Josh Salisbury

Severe delays are continuing on the Central, Bakerloo and Piccadilly lines.

On the Bakerloo, delays are being caused due to an earlier points failure at Harrow & Wealdstone.

On the Central, delays are because of an earlier defective train at Bethnal Green, TfL says.

Meanwhile, on the Piccadilly, there are severe delays between Acton Town and Uxbridge/ Heathrow Airport due to an earlier signal failure Caledonian Road.

Overground services back to normal

17:02 , Josh Salisbury

Disruption to Overground services between Watford Junction and London Euston has now been resolved.

National Rail said a points failure at Harrow & Wealdstone had now been fixed, meaning services could run normally.

Engineering work to affect Thameslink services

16:31 , Josh Salisbury

Engineering work tomorrow will close some lines between London Blackfriars and East Croydon.

Thameslink has warned that this will in turn, affect the usual route its drivers use to run the Horsham to Peterborough services.

It means there will be no direct Thameslink service between Horsham and Peterborough.

For more information, visit here.

London Overground part-suspended

14:12 , Jacob Phillips

There is no service between Harrow & Wealdstone and Watford Junction while Network Rail fix a points failure at Harrow & Wealdstone.

Transport for London has said there is a good service on other routes.

Minor delays on the Hammersmith and City Line

14:01 , Jacob Phillips

There are minor delays on the Hammersmith and City Linebetween Liverpool Street and Barking due to a trespasser on the track, Transport for London has said.

Trains running on Bakerloo Line again

12:42 , Jacob Phillips

There are severe delays between Queen's Park and Harrow & Wealdstone on the Bakerloo Line after an earlier signal failure at Kensal Green stopped trains running.Transport for London has said there is a good service on the rest of the line.

Severe delays on the Piccadilly Line

12:27 , Jacob Phillips

There are severe delays on the Piccadilly Line between King’s Cross and Heathrow Airport.

There are also delays between King’s Cross and Uxbridge.

Good service again on Metropolitan Line

12:22 , Jacob Phillips

There is a good service again on the Metropolitan Line following earlier flooding, Transport for London has said.

Severe delays on the London Overground again

11:29 , Jacob Phillips

There are severe delays on the London Overground between Watford Junction and Euston while Network Rail fix a signal failure at Queen’s Park.

Bakerloo Line part-suspended

10:53 , Jacob Phillips

There is no service between Queen's Park and Harrow & Wealdstone on the Bakerloo Line while Network Rail fix a signal failure at Queen's Park.

Metropolitan Line part-suspended due to flooding

10:09 , Jacob Phillips

There is no service between between Chalfont & Latimer and Chesham on the Metropolitan Line due to flooding.

Transport for London has said there is a good service on the rest of the line.

London Overground strikes planned for next week called off

10:01 , Jacob Phillips

Strikes planned for the Overground on March 4 and 5 next week have been called off.

RMT members with Arriva Rail London, which operates the Overground, had planned a walk-out over pay conditions.

However, it was suspended on Thursday, meaning planned disruption to key routes on the Overground will now not go ahead.

Read the full story here.

Minor delays on Jubilee Line

08:42 , Jacob Phillips

There are minor delays on the Jubilee Line while Transport for London fix a faulty train at London Bridge.

London Overground no longer part-suspended

08:31 , Jacob Phillips

The London Overground is no longer part-suspended but there are still severe delays on part of the line, Transport for London has said.

There are currently severe delays between Willesden Junction and Clapham Junction due to a track fault at Clapham Junction.

Trains running again on the District Line

08:27 , Jacob Phillips

The District Line is no longer part-suspended but commuters face severe delays, Transport for London has said.

There are currently severe delays between Turnham Green and Richmond due to an earlier track fault at Kew Gardens.

London Overground part-suspended

07:52 , Jacob Phillips

There is no service on the London Overground between Willesden Green and Richmond.

Transport for London has said Network Rail is fixing a track defect at Kew Gardens.

District Line part-suspended

07:47 , Jacob Phillips

There are no trains currently on the District Line between Turnham Green and Richmond.

Transport for London said Network Rail are fixing a track fault at Kew Gardens.

Repairs on line from Marylebone Station for four days

07:32 , Jacob Phillips

No trains are able to run between London Marylebone and Aylesbury, via Amersham as urgent repairs to the track take place.

National Rail said the repairs are happening near Stoke Mandeville station.

Lines in both directions will be closed for four days.

Minor delays on the Piccadilly Line

07:20 , Jacob Phillips

There are minor delays on the Piccadilly Line between Cockfosters and Acton Town while Transport for London fixes a signal failure at Caledonian Road.

Southern trains disrupted

07:08 , Miriam Burrell

Some Southern train services are being cancelled or revised this morning.

Urgent repairs to the track are being carried out between Clapham Junction and Watford Junction. Services between Clapham Junction and East Croydon, Watford Junction and Hemel Hempstead, and between Selhurst and Hemel Hempstead are affected.

Disruption is expected until 8am.

Commuters may need to use an alternative route “which is likely to take 30-45 minutes longer than usual”, National Rail warned.

Southern tickets for this route will be accepted at no extra cost on:

• London Overground services between Clapham Junction, Shepherds Bush and Willesden Junction, and between London Euston, Willesden Junction, Wembley Central, Harrow & Wealdstone and Watford Junction

• London Underground services on any reasonable route across London

• London Buses on any reasonable route serving stations between Clapham Junction and Watford Junction

• London Northwestern Railway services between London Euston and Watford Junction

• Chiltern Railways services between London Marylebone and Wembley Stadium

Minor delays on the District Line

07:04 , Miriam Burrell

There are minor delays between Upminster and Barking stations, westbound only, while TfL fixes a faulty train at Elm Park.

Severe delays on Bakerloo Line

07:03 , Miriam Burrell

There are severe delays between Queen's Park and Harrow & Wealdstone stations due to a signal failure at Kensal Green.

Severe delays on the Overground

07:01 , Miriam Burrell

There are severe delays between Willesden Junction and Clapham Junction due to a track fault at Clapham Junction.

There is a good service on all other routes.