Major disruption is expected on the trains in south London this morning because of a shortage of London Overground trains.

The shortage is because of extra safety inspections and means the some routes have been suspended - including between Highbury and Islington and Crystal Palace/West Croydon;Dalston Junction and New Cross/Clapham Junction; Willesden Junction and Clapham Junction. A reduced service is operating between Stratford and Richmond.

The problems are expected to last until noon.

Southeaster tweeted: "There are currently no @LDNOverground services from New Cross. You will need an alternative route if you usually change to their services at New Cross."

Rail operator said this will make Southern and Thameslink services 'busier than usual’.

National Rail has said London Overground passengers are permitted to travel through any reasonable route on Southern and Thameslink services in central London, Clapham Junction and Watford Junction, and West Croydon.

There will also be additional stops put to help maintain connections through central London, and you are able to travel on London Underground, c2c, Southeastern, Greater Anglia and London buses on reasonable routes.