The Commissioner, Sir Bernard Hogan-Howe, said: “This has been a really busy week, even by the standards of the Met, and my officers have worked very hard in the face of some incredibly challenging and even violent circumstances.
“Last Saturday night, we mobilised 300 officers from across London to deal with an unlicensed music event in Lambeth - the responding officers were faced with immediate hostility and violence. I’d like to thank the local residents who came out to support my officers.
“Throughout this week we’ve policed a number of peaceful protests, something we have a proud tradition of doing, many of which pass by without notice.
“And of course last night, my officers were well and truly in the front line. Fortunately, the four injured officers are doing ok. The most seriously injured was a mounted officer who was thrown from his horse, Embassy, after they had fireworks thrown at them in the Mall.
“Injured officers, injured horses and 50 arrests are not peaceful protest. The event tied up nearly 2,000 officers - who in the main, came from our boroughs.
“But, our work does not stop here. We now have investigations ongoing - not just into Whitgift Street [29 arrests so far] but dealing with those 50 arrests from last night and identifying anyone else who broke the law.
“I’m really proud of everything my officers have done this week.”