There are severe delays on the Circle and District lines on Thursday afternoon following a casualty on the track.
The Circle Line was completely suspended as emergency services responded to the incident, but had reopened with delays by around 2.20pm.
A spokesperson for the British Transport Police said: “Officers were called to Gloucester Road underground station at around 11.13am today (6 June) following reports of a casualty on the tracks. Paramedics also attended, and a person was taken to hospital with life-changing injuries.”
London Overground is also facing severe delays between Stratford and Gospel Oak due to an earlier faulty train.
It comes after a woman was rushed to hospital following a collision involving a car and a lorry on Chalk Farm Road.
The crash led to the closure of the A502 Chalk Farm Road Northbound from Hawley Crescent to Camden Lock Place, and buses were diverted.
Meanwhile, Elizabeth line commuters travelling through east London are facing disruption for the whole of Thursday.
A speed restriction is in place over defective track at Ilford.
The issue is causing severe delays on the Elizabeth line between Shenfield and Paddington, according to TfL.
Follow latest updates below…
Circle Line fully open but with severe delays
14:25 , Lydia Chantler-Hicks
The Circle Line has now fully reopened following the earlier casualty, but is running with severe delays.
There are also severe delays on the District Line, but the earlier delays on the Overground have ended and it is now operating with a good service, says TfL.
Circle Line now running anti-clockwise
14:00 , Lydia Chantler-Hicks
The Circle Line is now running again anti-clockwise, but with severe delays. There is still no clockwise service running.
Severe delays on London Overground
13:43 , Sami Quadri
There are severe delays between Stratford and Gospel Oak due to an earlier faulty train at Gospel Oak. All other routes are operating with good service.
Hammersmith and City Line hit with minor delays
13:10 , Sami Quadri
The Hammersmith and City Line is experiencing minor delays as emergency services deal with a casualty on the track.
Severe traffic delays in Ealing due to HS2 works
12:44 , Sami Quadri
Western Avenue is reduced to one lane in both directions between Teignmouth Gardens and Mansfield Road due to HS2 works. Expect slow traffic on the eastbound approach to the restrictions.
District Line hit with severe delays
12:42 , Sami Quadri
Commuters face severe delays on the District Line after service was suspended between Earl’s Court and Embankment due to a casualty on the track.
District Line part suspended
11:44 , Sami Quadri
Emergency services are currently dealing with a casualty on the track, causing the District Line to suspend service between Earl’s Court and Embankment, and between Earl’s Court and Edgware Road.
Circle Line suspended
11:39 , Sami Quadri
All services on the Circle Line have been suspended while emergency personnel deal with a casualty on the track.
Jubilee Line hit with minor delays
11:19 , Sami Quadri
The Jubilee Line is experiencing minor delays between Wembley Park and Stanmore due to a safety inspection of the track at Kingsbury. The rest of the line is operating with a good service.
Road closure in Peckham after motorbike accident
10:53 , Sami Quadri
Police rushed to Queens Road following a motorcycle collision on Thursday morning.
Both the rider and the pillion passenger were taken to the hospital with non-life-threatening injuries.
Officers and the London Ambulance Service attended the scene. Road closures were temporarily in place but have since been lifted. Investigations into the incident are ongoing.
Huge traffic delays in Westminster
10:30 , Sami Quadri
Drivers have been hit with delays on Victoria Street, with westbound queues stretching back to Artillery Place.
Temporary traffic signals at the junction of Palace Street are in place to facilitate essential UKPN works.
Road closure following building fire in Enfield
09:49 , Sami Quadri
A building fire has closed the A1010 Hertford Road in both directions between Carterhatch Lane and Brick Lane, causing significant delays. Congestion extends to Brimsdown on Green Street and the A10 on Carterhatch Lane; buses 121 and 279 are on detour.
Disruption between Stratford and Romford expected until the end of the day
09:48 , Sami Quadri
Due to a speed restriction over defective track at Ilford, Elizabeth Line and Greater Anglia trains are facing cancellations and delays of up to 10 minutes. Expect disruptions until the end of the day on these routes.
Minor delays on Elizabeth line
09:34 , Sami Quadri
Minor delays are currently affecting services between Whitechapel and Shenfield due to an earlier Network Rail track fault at Ilford. The situation has improved from the major disruptions experienced earlier.
Drivers hit with delays in Chiswick due to gas work
09:32 , Sami Quadri
Temporary traffic signals and single alternate lane traffic are in place on the A316 Burlington Lane at the junction of Paxton Road due to emergency gas works.
Pictured: Crash between lorry and car that led to closure of Chalk Farm Road in Camden
08:58 , Sami Quadri
Road closure following crash involving car and lorry in Camden
08:33 , Sami Quadri
A woman was rushed to hospital following a collision involving a car and a lorry on Chalk Farm Road in Camden Town.
Police were called to the scene following reports of a crash at around 1.55am on Thursday.
A woman was taken to the hospital for treatment, though her injuries are not considered life-threatening. A man was treated at the scene.
The crash has resulted in the closure of the A502 Chalk Farm Road Northbound from Hawley Crescent to Camden Lock Place.
Road closure following crash between lorry and car in Camden
08:32 , Sami Quadri
A woman was rushed to hospital following a collision involving a car and a lorry on Chalk Farm Road in Camden Town.
Police were called to the scene following reports of a crash at around 1.55am on Thursday.
A woman was taken to the hospital for treatment, though her injuries are not considered life-threatening. A man was treated at the scene.
The crash has resulted in the closure of the A502 Chalk Farm Road Northbound from Hawley Crescent to Camden Lock Place.
Road closes following collision in Camden
08:12 , Sami Quadri
A crash has closed the A502 Chalk Farm Road Northbound from Hawley Crescent to Camden Lock Place. Buses 1, 24, 27, and 31 are on detour, but traffic is coping well.
Serious delays on A24
08:07 , Sami Quadri
Emergency gas works have resulted in temporary traffic signals on the northbound A24 High Street Colliers Wood at the junction of Valley Gardens. Expect delays in this area.
Serious delays on A24
08:02 , Sami Quadri
Emergency gas works have resulted in temporary traffic signals on the northbound A24 High Street Colliers Wood at the junction of Valley Gardens. Expect delays in this area.
Disruption between Stratford and Romford
07:47 , Sami Quadri
A speed restriction over defective track at Ilford is causing delays of up to 10 minutes and potential cancellations on the Elizabeth line and Greater Anglia services.
Disruption is expected until the end of the day.
Minor delays on Piccadilly Line
07:45 , Sami Quadri
The Piccadilly Line has been hit with minor delays between Acton Town and Uxbridge due to a points failure at Northfields.
However, good service remains on the rest of the line.
Greater Anglia trains also affected by broken fail
07:15 , Josh Salisbury
Greater Anglia trains are also being affected by the broken rail at Ilford.
National Rail says engineers discovered a cracked rail which has been deemed unsafe and a speed restriction has been imposed until the defect has been replaced.
It means Greater Anglia services between Stratford and Romford may be cancelled or delayed.
As a reminder, Elizabeth Line trains may also be delayed all day due to the same fault.
Severe rush hour delays on the Piccadilly Line
06:49 , Josh Salisbury
In addition to the Elizabeth Line disruption, passengers are also facing delayed Piccadilly Line trains.
There are severe delays between Acton Town and Uxbridge due to a points failure at Northfields and minor delays en-route to Heathrow Terminals.
There are also minor delays on the Bakerloo as TfL engineers fix a signal failure at Lambeth North.
Elizabeth Line hit with delays
06:46 , Josh Salisbury
Good morning. Elizabeth Line trains running between Heathrow to Gidea Park in east London face disruption all day because of a defective track at Ilford.
The issue means trains have to run a reduced speed on some lines, with National Rail warning passengers of possible cancellations or delays of up to ten minutes.
TfL said there were minor delays on the line between Paddington and Shenfield over the track fault.