The centre, called Granby Talk, will handle services such as overflow call handling and outbound campaign operations, building on Granby's existing telephone customer services and order handling operation.
It follows reports that clients are more likely to outsource in a recession in order to minimise costs.
Granby Marketing Services said that its business has grown by 10% in 2008 driven by new service innovation and improvements to existing operations.
The launch of Granby Talk will increase the number of permanent staff positions and add to the portfolio of services that Granby can offer potential new customers.
Stewart Oxley, sales and marketing director at Granby Marketing Services, said: "We are constantly trying to develop the sphere of our expertise and increase our experience of working with clients supporting other brand and promotional activity, and we're immensely proud of what has been achieved by the contact centre at Granby.
"The standards of customer care and client reporting have helped set us apart from the noise of the industry. The demand for our contact centre services has been extremely encouraging which reinforces our decision to separately market this offering as a standalone resource."