A speed restriction is in place between Ingatestone and Chelmsford, causing trains to move at a slower pace on all lines. This comes as Essex is forecast to reach highs of an estimated 34C today, according to the Met Office. The reduced speed affects train services running through these stations, and disruption is expected until further notice:London Liverpool Street < - > Colchester TownLondon Liverpool Street < - > BraintreeLondon Liverpool Street < - > ClactonLondon Liverpool Street < - > IpswichLondon Liverpool Street < - > NorwichThose with advance purchase tickets can use earlier or later trains if their booked service is cancelled. An update from Greater Anglia is expected to follow within the next hour. Both Greater Anglia and Network Rail have apologised for the disruption.