Passengers will now be able to travel on an orbital route on London Overground after the opening of a new link in south London.
Dry and settled. A week when you can finally leave the umbrella at home.
Thousands of passengers at airports, including Heathrow, Stansted, Gatwick and London City, are facing major disruption.
Detectives investigating the murder of a single father outside a London pub have made a second arrest.
Christopher Foster was stabbed outside St Christopher's Inn on Borough High Street last Friday. Witnesses say he was attacked by a gang who were brandishing baseball bats and at least one knife.
Officers believe the offenders targeted the wrong man.
A 30-year-old man has been arrested on suspicion of murder and has been taken into custody at a south London police station. It comes after a woman was arrested and bailed on Sunday on suspicion of assisting an offender.
The National Air Traffic Service said an issue with its system, which has led to flight delays and cancellations was unlikely to be fixed until between 6.30pm and 7pm.
The issue has affected flights from Stansted, Heathrow and Gatwick airports, as well as many other across the country.
– British Airways spokesman
We are doing all we can to minimise disruption to our flights, but there will inevitably be a significant number of short-haul cancellations at some UK and European airports today.Customers are advised to check ba.com for latest flight information... Customers on cancelled flights will be able to claim a full refund or be rebooked on to alternative flights. Given that Heathrow is the world's busiest two-runway airport and Gatwick is the world's busiest single-runway airport, there will be problems for all airlines as a result of the ATC failures."
There's been a third arrest in connection with the murder of a 17-year-old boy, in north London.
Joshua Folkes, known as Money J, was stabbed to death outside a friend's home in Palmers Green, on Tuesday morning.
A teenage boy, also 17, is being held in central London on suspicion of murder.
Another person arrested, 18-year-old Kreshnik Etemi, will appear at Highbury Corner Magistrates Court later.
A 15-year-old girl arrested in connection with the murder has been bailed.
– Chris Yates, Independent aviation analyst
It's going to be a day of frustrations and the knock-on effects are going to last for the whole day...There are contingency plans in place whenever this happens. Many of the long-haul flights, coming from China, India, the US and so on, passengers sitting on those planes may find themselves diverted to continental airports. But it's going to be a long wait for them. When the system kicks back in and starts working, there will be a backlog of flights. For those waiting to fly out, it's going to be a case of sitting around the airport terminal until things get back to normal."
Heathrow - had cancelled 60 flights by 9.45am, with that figure split roughly equally between departures and arrivals.
Stansted - departing flights have been subject to delays of between 30 minutes and two hours.
London City Airport - about 50% of its flights have been disrupted.
Luton - inbound flights have been unaffected but outbound flights have been hit.
Gatwick - 20% of departures have been delayed, with passengers warned they could wait for "a couple of hours".
National Air Traffic Services (Nats) does not currently know how long it will take for the technical glitch - which is affecting thousands of people at airports including Heathrow, Stansted and Gatwick - to be rectified.
Nats said the issue arose at its control centre in Hampshire, in the early hours of the morning when a computing glitch meant the night-time operation failed to properly switch over to the daytime system.
– Nats spokesman
" We experienced a technical problem in the early hours of this morning, which means that it hasn't been possible to reconfigure the voice communications system to split out the sectors for the busier daytime traffic in some areas of the UK enroute airspace. Engineers are working to rectify the problem as soon as possible, but this is resulting in some delays. Safety has not been compromised at any time, and we sincerely apologise for any inconvenience being caused to passengers."
– A spokeswoman for London City Airport
"Due to technical problems at the Nats control centre, which controls London's airspace, flights are being disrupted. As soon as the fault is rectified, we will resume normal service as quickly as possible. We advise passengers to contact their airline for flight information.