An update from the Maritime and Coastguard Agency says that 10 people have been injured, and that most are showing signs of hypothermia.
The statement continued: "It's believed that all those in the water have been accounted for. However rescue units on scene, including the helicopters and lifeboats, are carrying out further searches to make sure."
More top news
An "institutional conspiracy" on an "unprecedented scale" existed in Russia to help some 1000 of its athletes benefit from doping.
Smog has shrouded the capital for a third consecutive day, with authorities advising people to limit their outside movements.
Private schools have offered to create 10,000 free places for poorer students but only if the government helps fund them.