The Independent Police Complaints Commission held investigations into allegations relating to the force's Central Process Unit in Blackburn.

One investigation examined allegations that a speed camera operative had failed to correctly calibrate speed cameras, while the second investigation examined allegations that staff had incorrectly processed paperwork.

The investigations have determined that the camera operative and two members of CPU staff should face disciplinary charges relating to misconduct. This panel will be convened by their employers, Lancashire Constabulary.

Two other members of CPU staff who were under investigation have been cleared of any wrongdoing.

The investigation relating to the speed camera operative resulted in the identification of 545 unsafe convictions, the refund of £35,000 in fines and the rescinding of 1500 penalty points.

The cameras in question were based in Penwortham and Blackpool.

The investigation into the processing of paperwork has resulted in the cancellation of 2,115 tickets and enquiries are ongoing to determine whether any convictions might have resulted from the processing of incorrect paperwork.

The matters had been voluntarily referred by Lancashire Constabulary to the IPCC as a result of internal concerns. The IPCC managed the investigation conducted by the force's professional standards department.

Naseem Malik, IPCC Commissioner for the North West, said: "The investigations have identified matters that must now be presented before a disciplinary panel and, therefore, it would not be appropriate to go into full details at this stage.

"However it is correct to say that concerns over the work of these individuals has resulted in a number of convictions having to be overturned. Once the disciplinary panels have been held, the IPCC will issue further details about the findings of the investigations."

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