MPs have passed the Police (Complaints and Conduct) Bill, debating all stages of the legislation on 5 December 2012.
This short bill is intended to increase the powers of the Independent Police Complaints Commission (IPCC), to conduct its new inquiry into the 1989 Hillsborough disaster.
The bill also deals with the double jeopardy issues involved in re-investigating something the predecessor body, the Police Complaints Authority, has already looked at.
Finally, the bill gives the IPCC powers to compel serving police officers to appear before them.
Most of the bill extends to the United Kingdom but some parts apply to England and Wales only.