A man has been arrested on suspicion of burgling the building housing the headquarters of the Conservative Party during a student tuition fees protest.
The 22-year-old from Cambridgeshire is suspected of burgling 30 Millbank, in central London, on 10 November.
A further four people have also been arrested as part of the inquiry into disorder during two other protests, on 24 November and 9 December.
It brings the total arrested as part of the three inquiries to 167.
A 17-year-old youth from Walthamstow, east London, has been arrested on suspicion of violent disorder on 9 December.
Meanwhile, three teenagers from north London have been arrested on suspicion of criminal damage in Whitehall on 24 November.
The two boys, aged 14 and 15, from Kentish Town, and a third boy, aged 16, from Upper Holloway, are suspected of damaging a police carrier.
Police have arrested 73 people in connection with the disorder on 10 November. One person was charged with violent disorder and all the others were bailed.
A total of 48 people were arrested over the disorder on 24 November. One person was charged with being drunk and disorderly and the rest were bailed.
All 45 people previously arrested over the disorder on 9 December have been bailed pending further inquiries.