Travel agents will no longer be able to book holidays through Complete Cruise Solution’s Viewdata system from September 30.
Bookings can be made on the CCS website and agents will receive a full guide on how to use the system and access to an online helpdesk.
Agents can also continue to use Amadeus Cruise.
Complete Cruise Solution head of sales Mark Pilkington, said: “There has been a dramatic decline in the number of bookings made via the Viewdata system in recent years and we believe that it is of greatest benefit to agents for us to focus our time and effort on providing the best in-house, online booking system in the industry.
“We have been communicating this change and successfully supporting agents in switching to our online system throughout this year.”
CCS is the sales arm of P&O Cruises, Princess Cruises, Ocean Village and Cunard.