More than 800 delegates are expected to attend, which will be the first COT conference held at the centre since its £1m refurbishment.
Jacinta Scannell of PCO Conference Collective said: "Alongside the venue’s obvious improvements, a key selling point when opting for the venue is the location. Close to Gatwick Airport and only an hour from London, with excellent travel links, the Brighton Centre provides ease of access to our delegates nationwide."
Howard Barden, general manager of the Brighton Centre, said: "This past year we have managed to turn the perception of the Brighton Centre around, with its fresh new appearance and excellent facilities. Our location is a key aspect that attracts many of our clients to the venue."