Passengers using Stansted Express services will face delays until around 11pm after cows were struck by a train.
Trains are unable to run between Bishop's Stortford and Stansted Mountfitchet.
- Abellio Greater Anglia services between London Liverpool Street and Cambridge
- Stansted Express between London Liverpool Street and Stansted Airport
National Rail say that trains running through Bishop's Stortford will be disrupted until 10pm tonight.
Services to Stansted Airport and Cambridge are being affected.
It's after cows ventured onto the tracks. Four animals are thought to have died.
Cows were running loose in Bishop's Stortford this afternoon after straying away from a nearby field.
A herd ventured onto the train tracks at Cannons Mill Lane in the town.
The British Transport Police say that some of the animals were hit.
Three of the cows then made their way towards the high street.
They were eventually caught by officers in the South Road area.
A stockman has now been called to come and collect them.
The incident has caused big disruption for trains hoping to come through the town, with problems expected until 10pm at least.
Trains are running an hour late, while other services may be cancelled altogether.
There's rail disruption on Abellio Greater Anglia trains between London Liverpool Street and Bishop's Stortford and between Liverpool Street and Cambridge due to overhead line problems at Broxbourne.
The issue is also affecting the Stansted Express serving the airport.
Services may be cancelled or delayed by 60 minutes. Disruption is expected until midday.
#Broxbourne - We have ordered replacement buses to run and expect them to be at Bishops Stortford within the hour. RH
Reports are coming in that roads in Bishop's Stortford have been closed down because of flooding.
Police are warning drivers not to attempt to pass through it. They say a critical incident plan is in place.
Roads blocked are thought to include Stansted Road and Parsonage Lane.
Stansted Road is shut. DO NOT ATTEMPT TO DRIVE THROUGH IT. A critical incident plan is in place. http://t.co/nLaPqc1HwT
A man from Bishop's Stortford has been jailed for three years for causing injuries to a child in his care.
The boy was four-months old when he was taken to Princess Alexandra Hospital in Harlow after a sudden fit. He was found to have various injuries to his body and a CT scan revealed a bleed to the brain.
Matthew Challis, 34, of Kingsmead Road, was arrested and later charged with causing serious physical harm to a child by means of an unlawful act.
Challis was found guilty following a trial at Chelmsford Crown Court on Wednesday, June 10. He had claimed the injuries to the child, who was alone in his care at the time, were accidental.
"Matthew Challis has continued to maintain his innocence and disputed medical evidence which concluded that the baby had been shaken and the injuries he sustained were not accidental."
"The boy is being monitored and we will have to wait and see whether the injuries he sustained at the hands of Matthew Challis have any lasting impact on his life moving forward."
A judge has commended two teenage brothers who chased a man after he attacked his former girlfriend with a hammer in Bishop's Stortford.Read the full story ›
A man's been jailed for life with a minimum of 22 years for killing his former girlfriend in a brutal hammer attack.
Matthew Keough left Sally Campion dying from 41 separate injuries inflicted on her with a claw hammer in the bedroom of her house in Bishop's Stortford, Hertfordshire in July 2014.
The mother-of-one died later in Addenbrooke's Hospital in Cambridge.
Keough, of no fixed address, appeared for sentence having changed his plea to guilty of murder at a hearing in May.
The Conservatives won the Hertford & Stortford constituency at the 2010 General Election with a majority of more than 15,000 votes.Read the full story ›
One of the region's best preserved medieval landscapes is to feature in ITV's Countrywise series later this year.
Hatfield Forest near Stansted Airport is home to many historic trees dating back hundreds of years to the time of the Tudor monarchs.
Elodie Harper met up with presenter Paul Heiney to find out more about this well-loved woodland - including the magical sounding Walking Tree.
Click below to watch the report: