Calder Conferences, which currently works with the Ministry of Justice, has won the multi-million pound contract after the previous framework setup, which was spread across five agencies, proved too costly.
According to James Turner of Calder Conferences, the agency is expecting to increase its turnover from government work from around £8m per annum to more than £30m.
Michael Begley, managing director of venuedirectory.com, which will provide the technology behind Calder's venue searching said: "This is massive for Calder. The idea is that they will be asked to look to improve efficiency over the two-years and we can help with this using our Gratis solution."
The first government department to move over to Calder Conferences will be the Home Office at the beginning of August, with the remainder expected to follow by April 2013.
Turner said: "This contract will easily quadruple our turnover. We have used the Gratis system from Venuedirectory.com for the last three years and have been delighted by the on-going development of the system and the support we get.
"The scalability and flexibility of the system connected to the 27,000 venues maintained by Venuedirectory.com makes it an ideal solution for all our clients."