The Bichard Inquiry, launched in 2003 following the Soham murders, exposed failures in police vetting and intelligence-sharing, leading to crucial reforms in child protection. Its 2004 report resulted in the creation of the Disclosure and Barring Service (DBS) to ensure stricter background checks for individuals working with vulnerable groups.

On 7 July 2005, four suicide bombers detonated explosives on three London Underground trains and a double-decker bus, killing 52 people and injuring nearly 800 in the worst terrorist attack in British history since Lockerbie 1988. The bombers, linked to Islamist extremism, carried out coordinated strikes during morning rush hour, causing chaos across London and prompting an extensive investigation into security failures and counterterrorism strategies. The attacks led to major reforms in UK security policy, including enhanced intelligence-sharing, increased surveillance, and stricter anti-terrorism laws.

The Riots Communities and Victims Panel investigated the August 2011 England riots, examining their causes, impacts, and response from authorities. The report found that social inequalities, poor policing, and lack of youth opportunities contributed to the unrest, and recommended 63 measures to strengthen community resilience and prevent future disturbances. Key proposals included better support for families, improved education and employment opportunities for young people, criminal justice reforms, and enhanced community engagement.

The Daniel Morgan Independent Panel was an eight-year investigation into the unsolved 1987 murder of Daniel Morgan, exposing institutional corruption within the Metropolitan Police and making 24 recommendations to improve accountability, transparency, and support for victims' families.

Southport public inquiry

Investigate how Wayne Couzens, an off-duty Metropolitan police officer, was able to abduct, rape and murder Sarah Everard.

Allegations that John Waters was assaulted by police officers on 7 December 1957, at Thurso and the action taken by the Caithness Police in connection therewith

The inquiry aimed to investigate the legality of the arrest, the treatment of Major Sheppard while in custody, and any potential misconduct by the police officers involved.

The Statutory Inquiry into the Death of Jalal Uddin investigates the circumstances of his 2016 murder, focusing on systemic issues, counter-terrorism measures, and police actions, aiming to provide recommendations to prevent similar tragedies.

The Dawn Sturgess Inquiry is an independent investigation into the circumstances surrounding the 2018 Novichok poisoning incident in Salisbury, focusing on the death of Dawn Sturgess.

The inquiry investigated the handling of Stephen Lawrence's murder case and concluded that the Metropolitan Police Service was institutionally racist, leading to significant reforms in policing and criminal justice in the UK.

The Undercover Policing Inquiry, chaired by Sir John Mitting, is an ongoing investigation into the practices and conduct of undercover police operations in England and Wales, particularly focusing on the Special Demonstration Squad (SDS) and the National Public Order Intelligence Unit (NPOIU), with the aim of ensuring such practices are conducted lawfully and ethically.

The Robert Hamill Inquiry investigated the death of Robert Hamill, examining whether any wrongful act or omission by or within the Royal Ulster Constabulary facilitated his death or obstructed the investigation, and made recommendations accordingly.

The Azelle Rodney Inquiry was a public inquiry into the circumstances surrounding the death of Azelle Rodney, who was shot by police in 2005, and it resulted in several recommendations for police practices.

The Anthony Grainger Inquiry was an independent public inquiry into the circumstances surrounding the death of Anthony Grainger during a Greater Manchester Police operation, chaired by His Honour Judge Teague QC, and concluded with 11 recommendations

The Detainee Inquiry was an independent, judge-led investigation into allegations of British involvement in the improper treatment of detainees held by other countries post-9/11