Early this morning, KLM flight 056 from Nairobi (operated by a B747) encountered braking problems upon landing at Schiphol and slid off the runway onto the grass.
Passengers were evacuated from the aircraft where it stood.
Schiphol has several runways so flight operations are continuing more or less as normal. But had this event happened at LGW or LHR there would have been huge delays because I am sure the authorities would have had to close the runway concerned.
Here’s a report with pictures and a video (Dutch language) of the incident in De Telegraf: