Hundreds of demonstrators have staged a roadblock outside The Royal Courts of Justice in opposition to the Government's proposed changes to legal aid.
Supporters of anti-cuts direct action group UK Uncut gathered on the Strand in central London at around midday.
Many of them sat on the road and others put their bicycles in the way of traffic.They held placards which read: "Justice for all, not just the rich".
City of London Police warned the group that they were stopping the emergency services from travelling around the capital.
The demonstration was one of several roadblocks planned in towns and cities across the UK, including Manchester, Liverpool, Cambridge, Hull, Northampton and Norwich.
Four HSBC branches in Glasgow, Sheffield, Brixton and Regents Street in London were closed temporarily while protesters from UK Uncut demonstrated outside.
Campaigners gathered outside 13 HSBC branches across the UK and attempted to turn them into temporary food banks to protest against cuts to welfare.
The group said that "tax dodging" by HSBC made the cuts worse because big businesses were "not paying their share".
A spokesperson for HSBC said: "HSBC takes tax transparency very seriously."
"Globally, HSBC paid £6.1 billion in tax last year, up from £5.2 billion in 2011, and just in the UK the bank paid a total of £1.1 billion in taxes."
In response to the Government's proposals announced today, a spokesperson for protest group UK Uncut told ITV News that clamping down on the latest tax avoidance schemes requires a change in law.
Campaigners from anti-anti cuts group UK Uncut are seeking permission to launch a High Court challenge against HM Revenue and Customs (HMRC) over an alleged "sweetheart" tax deal with multinational banking giant Goldman Sachs.
The group want the court to rule that an agreement allowing Goldman Sachs to skip a multi-million pound interest bill on unpaid tax on bonuses was unlawful, and they want the £20 million allegedly involved to be returned to the public purse.
The are asking for permission to take their case to a full judicial hearing.