London Underground
Delays also hit London Underground commuters on Friday morning, with the Metropolitan Line being partially suspended and the Jubilee Line subject to “severe delays”.
A trespasser on the tracks at Willesden Green caused Met Line services to be cancelled between Wembley Park and Aldgate, which is the majority of the line’s length.
It runs between Aldgate and destinations in the west including Watford, Amersham, Chesham and Uxbridge.
Severe delays hit the Jubilee Line because of the same trespasser. Met and Jubilee tracks run alongside each other at Willesden Green.
Minor delays on the Piccadilly Line caused more airport travel misery, with services between Acton Town and Heathrow being affected by an earlier broken-down train at Northfields.
Chiltern Railways – Birmingham International
On Chiltern Railways, trains were being cancelled between Marylebone and Birmingham International, the city’s airport station, after a police incident forced the closure of all tracks leading out of the London terminus.
All Chiltern routes will be subject to delays or cancellations until further notice, the company said.
Greater Anglia – Stansted
Greater Anglia trains serving Stansted are running with hour-long delays after emergency services closed the lines following a person being struck by a train at Audley End in Essex.
The lines were closed for around an hour but Greater Anglia warned that trains between Liverpool Street and Stansted Airport, as well as London and Cambridge, would be subject to delays, alterations and cancellations.
Thameslink – Gatwick and Luton
Thameslink, which serves London Gatwick and Luton airports, was hit with “a number of incidents” including a points failure near St Albans that triggered “major disruption” to its services. The company warned of 30-minute delays between Luton and St Albans.
It also said trains are “unable to call at London Bridge, in the direction of London Blackfriars, until further notice” as a result of a separate points failure between the two stations.
“If you are travelling towards London, and need to alight at London Bridge, you will have to continue through to London Blackfriars and catch a return service,” Thameslink added.