Around half of the IT managers in UK businesses have no plans to switch to Microsoft's Windows Vista operating system in the future, a report suggests.

A report by Enteo and Vanson Bourne, seen by Computerworld UK, found that only three per cent of IT managers plan to switch to Vista in the immediate future.

The website reports that 62 per cent of IT professionals were concerned about the complexity of Vista and how hard it would prove to be to integrate with existing systems.

IT workers were worried that migrating to Vista could result in lost productivity for their business as colleagues could experience downtime while the new systems were put in place.

Stephan Glathe, chief technology officer at Enteo, explained to the website: "A number of those surveyed were deterred by post-migration issues such as patching, which is understandable.

"Microsoft has already announced the launch of the first service pack for the product; so many IT managers may be waiting for this to come out before they roll out the new OS."

However, Mr Glathe added that businesses should accept that they will have to move over to Vista in the future and plan for it.

"Vista represents an opportunity for businesses to gain improved functionality and a generally more efficient OS," he said.

"However, migrating to a completely new OS is no easy task and IT managers need to be prepared and have the right tools in order to gain the maximum benefits."