Fred Olsen Cruise Lines is including a free all inclusive drinks package and £70 per person on board spending on a selection of summer sailings.
The Platinum Jubilee deal covers more than 20 cruises, with departures from Southampton, Dover, Liverpool, Belfast and Rosyth, to destinations including the Norwegian fjords, Iceland, Canada, Spain, the Azores and the UK.
Double credit of £140pp to spend on board is available for those booking suites.
The offer runs from today (Wednesday) until June 7.
Marketing and sales director Jackie Martin said: “This weekend is set to be a wonderful celebration of the Queen’s Platinum Jubilee. Across the country, there will be countless street parties as friends and family come together, and we will be replicating the festivities on-board each of our ships with our guests.
“We wanted to extend these celebrations to those looking to join us later in the year, and thought what better way than by offering £70 per person to spend on board, as a nod to each of The Queen’s 70 years in service?
“Plus, we’re offering a drinks package upgrade too, so guests can make a toast to the Queen in one of our many bars and lounges on board, on us.
“This selection of cruises has been specially hand-crafted to offer outstanding scenic cruising, cultural cities and wildlife hotspots, in addition to experiencing our warm and friendly atmosphere aboard our smaller ships.”
Meanwhile, discounts of between £75 and £250 are being offered by P&O Cruises for bookings made by July 4 to mark the Jubilee.
The promotion covers departures between September 1 and December 30.
Bookings made by July 4 can be secured with a £70 per person low deposit on Select Price and Early Saver rates.
Regional flight supplements are also being removed on new Select Price and Early Saver bookings made by September 5 on fly-cruises to the Caribbean, Canary Islands and Mediterranean departing until October 4, 2024.
The booking incentives come as the company plans on board celebrations to mark the Platinum Jubilee including special guest speakers on three ships over the extended bank holiday weekend.
Revised cruise prices lead in at £424 per person for a seven-night northern Europe cruise on new ship Iona from Southampton on February 11, 2023.