This followed a delay of ten minutes during which he was left handcuffed in a 'rear stack' position, unattended and unmonitored while the van sat outside the station in the car parking area.

[11] Two officers then carried Rigg to the caged area at the entrance to the station's custody suite where he was left placed on the floor "handcuffed and unresponsive."

[17][18] Daniel Machover, the solicitor acting on behalf of Rigg's brother Wayne, reacted: "Now that the IPPC has published its February 2010 report, the public can see for itself that the IPCC failed to properly examine the most basic evidence in its possession in Sean Rigg's case, including police incident records, photographs of the restraint and CCTV footage, which meant that officers were never asked key questions until the inquest.

In March 2013 three Metropolitan Police officers were arrested on suspicion of perverting the course of justice with regard to evidence given at Rigg's inquest.

[21][22] In April 2014 the IPCC passed files to the Crown Prosecution Service (CPS) to consider whether criminal charges of perjury and perverting the course of justice should be brought against two of the officers, Sgt Paul White and PC Mark Harratt.

[32] Rigg's sister Marcia said, "The jury's verdict was a surprise to me and my family but we will continue to fight for full accountability for those officers who were on duty at Brixton police station.

"[33] In November 2012 it was announced that an independent review of the IPCC investigation would be carried out, headed by Silvia Casale, former president of both the European and United Nations committees for the prevention of torture and inhuman and degrading treatment of prisoners.

The review, the first ever into an IPCC investigation, would also consider whether any of the police officers or emergency telephone operators should face misconduct or criminal proceedings.

[15] Failings included:[35] The report also recommended that the IPCC "reconsider the conduct of the police officers involved in the apprehension, restraint and detention of Mr Rigg, in relation to possible breaches of their duty of care, with a view to determining whether to bring misconduct proceedings.

"[36][37] Rigg's sister Marcia said: "Almost five years after our brother's unnecessary death, this report shows just how badly we were failed by the IPCC, not to mention the police.

We hope that a complete reinvestigation of the issues identified by the review, with new consideration of police misconduct and criminal proceedings, will take place as quickly as possible.