A broken down train has caused “absolute chaos” for commuters travelling from East Anglia to London.
The 06:00 BST train from Norwich to London was hit by a brake fault at Ingatestone, Essex, and could not be fixed by engineers on the line.
The train, on the Liverpool Street and Stratford line, has been towed back to Chelmsford and passengers moved to other trains.
Greater Anglia said the line re-opened at midday.
Commuter Mark Horsfield, who caught the broken down train at Ipswich, said there was “absolute chaos on trains again this morning”.
“There’s the usual confusion, lots of apologies but we don’t want an apology, we want to know when we’re going to get to where we need to be.
“I’ve been commuting for 20 years, things can go wrong and when they do it’s a real test of ability. I’ve experienced a few issues while commuting, but this is a particularly bad one.”
A Greater Anglia spokeswoman said: “Several services were delayed or cancelled this morning due to a broken down train at Ingatestone. Engineers were unable to fix the fault and the train terminated at Chelmsford.
“A number of rail replacement buses were used between Braintree and Witham, and Thorpe-le-Soken and Walton-on-the-Naze. Passengers from Norwich were advised to travel via Cambridge.
“We apologise for the disruption. Anyone affected may be entitled to claim delay repay compensation.”
Source: BBC Suffolk