The chairman of the Home Affairs Select Committee said that a national register for PCCs is "vital for local accountability".
Keith Vaz MP said: "We need to guard against maverick decision-making," he added, "the Government is going to publish a register of chief constables' interests, but has so far refused to do so for PCCs, who share the power over policing."
Last year PCCs replaced police authorities in 41 force areas across England and Wales, they were handed the power to set force budgets and even hire and fire chief constables.
A report from the Committee said Home Secretary Theresa May was "keen to distance herself from any responsibility to assess the performance of the PCCs", stating that they were ultimately "accountable to the electorate".
The police investigation in to the "Plebgate" affair which led to the resignation of former chief whip Andrew Mitchell has cost nearly £150,000, it emerged.
Codenamed Operation Alice, the Scotland Yard inquiry was launched after claims that officers may have lied about the dispute with Mr Mitchell when they refused to let him leave Downing Street on his bike via the main gate in September last year.
In a letter from Deputy Assistant Commissioner Patricia Gallan, leading the investigation, to Keith Vaz, chairman of the Commons Home Affairs Select Committee, it was disclosed the cost of the police investigation had reached £144,000.
DAC Gallan wrote: "It remains that I have 30 officers at my disposal and the Operation Alice is estimated to have cost £144,000 to date."
"Four people have been arrested and no individual is currently charged. The advice file submitted to the CPS by the MPS (Metropolitan Police Service) has specifically asked for advice and guidance surrounding the future of the investigation in relation to potential criminal charges."
Home Affairs Select Committee chairman Keith Vaz is urging the Government to conduct a "full study" into the impact of the lifting of the access restrictions between the UK and Bulgaria and Romania. He said:
Though this report is helpful, what the Government needs to do is to commission a full study into the impact of the raising of transitional arrangements placed on Romanian and Bulgarian citizens.
This report contains no estimates of expected arrivals, yet when we deal with immigration it is essential we have the facts and figures.
It would be helpful if Theresa May visited Romania and Bulgaria to gauge the reasons why their citizens would chose to migrate to the UK.
The way we handle this issue will be fundamental in shaping our relationship with the EU, and with future enlargement applicants such as Turkey.
An influential MP has called for David Cameron, Nick Clegg and Ed Miliband to formulate a joint policy on immigration to avoid "fringe parties" filling a vacuum.
Keith Vaz, the chair of the home affairs committee, said cross-party talks were needed to avoid an “arms race” towards tougher policies.
In an article for the Sunday Express, Vaz wrote: “Rather as they did for the Royal Charter agreement after Leveson, Messrs Cameron, Clegg and Miliband should now sit down together and talk about this issue.
“By doing this they will deny fringe parties the opportunity to fill the vacuum and demonstrate to the British people they want to engage purposefully and productively in addressing one the most challenging issues that our nation faces.”
Public confidence in the police force has been shaken because of a "dangerous cocktail" including the "plebgate" affair and the results of the Hillsborough Inquiry, a senior Labour backbencher has said.
Keith Vaz MP, chair of the Home Affairs Select Committee, which will start an inquiry into police accountability, integrity, internal corruption and malpractice in January, said it is a "defining moment" for the service.
He called on Prime Minister David Cameron to host annual summits with senior officers and called for "a new Magna Carta" for policing.
In the Sunday Express, Mr Vaz said recent events had dented the public's confidence in the police.
Keith Vaz MP, who represented the family of nurse Jacintha Saldanha, has written to the owners of Australian radio station 2Day FM to express his "concern" that Southern Cross Austereo "appears to have not taken any steps to assist the family."