Two more people have been arrested by police investigating disorder during the tuition fee demonstrations.
Charlie Gilmour, the son of Pink Floyd frontman David, was arrested at his home in Sussex on Sunday.
And a 17-year-old who was allegedly in one of a first batch of 14 pictures of people wanted in connection with violence at the protest handed himself in.
Police have since issued a second batch of four images, plus footage from Thursday's events.
They have urged organisers of protests planned for Monday and Tuesday to work with them to head off any potential further trouble.
Gilmour, 21, is being held on suspicion of violent disorder and attempted criminal damage of the Union flag on the Cenotaph on December 9.
He was taken to a Sussex police station where he was also arrested on suspicion of theft. He remains in custody.
He has apologised after being identified as one of those who climbed on the Cenotaph, the nation's monument to its war dead, as thousands of youngsters vented their fury over the decision by MPs to treble university fees to a maximum of £9,000 a year.