Cruise liners P&O and Cunard are running a new booking promotion which offers travel agents a bonus commission of up to six per cent.

The operators are paying the extra commission on P&O Cruises Select Price and Cunard Fare holidays bookings for departures between September 2014 and June 2015.  

Agents can also earn an extra three per cent commission for bookings of Early Saver fares for both brands.

They will be given the chance to win one of 300 cabins for an agent plus a friend on a two-night celebration sailing on P&O Cruises new ship Britannia next March.

A further incentive is the opportunity to win five 'Golden Suitcases' each containing a £5,000 gift to be drawn at a special event in Southampton in September.

"This is yet another example of our commitment and investment into agents, our most important distribution channel," P&O's sales and distribution support director Chris Truscott told TravelMole.