If you are involved in a work related incident as an employee there will usually be an investigation to determine the cause.
Likewise, the law enables a similar recourse if there is any suspicion of management wrongdoing. This can involve the DTI, the Serious Fraud Office and even the CAA, to name but a few.
In some circumstances, directors, and managers can also be found personally liable. There are very clear legal responsibilities imposed on directors, and even a Limited company will not afford protection to any violators.
You folks really need the service of a specialist solicitor who can guide you through the necessary procedures for the advancement of your case.
IT IS YOUR LEGAL RIGHT.
Good luck.