KEEP it strictly confidential. That's the message being given to businesses in Bury.

They are being advised to ensure that they comply with the new Data Protection Act which regulates details held about employees, clients and suppliers.

But according to the Bury Society of Chartered Accountants, the revised Act is so complicated that most firms are finding it difficult to make sure their data is held lawfully and fairly. Co-ordinator Martin Hardman said there were now tighter controls over records and that organisations were required to be more open about the intended use of information.

He added that it was essential for firms to examine their records and decide whether the information was relevant and up-to-date.

Mr Hardman continued: "Some requirements, such as how long details of former employees should be kept, aren't all that clear.

"The decision will depend on the size of business, the number of employees and the type of data held."

In some cases, such as bank details for paying wages, the consent of individuals can be assumed, but for retention of other sensitive data, explicit consent must be obtained.

"This could involve medical histories, political affiliations and details of ethnic origin," Mr Hardman explained.

"The new law also covers some type of paper files as well as computer records and practice will vary widely from company to company."

The Data Protection Commission has launched a campaign aimed at firms requesting and storing personal details.

Companies displaying the padlock symbol agree to explain why information is being required and how it will be used.