Saga’s two new ships will operate an all-inclusive policy with all house spirits, wine, beer and soft drinks included.

Spirit of Discovery, the first of the pair of boutique vessels, will become all-inclusive in January 2020, six months after entering into service .

Sister ship Spirit of Adventure will also be all-inclusive when it joins the fleet in August 2020.

The move has been made in response to customer demand, according to the over-50s company which already offers all gratuities, a UK transfer service and free wi-fi on board.

Chief operating office Nigel Blanks said that the decision to go all-inclusive in 2020 had been made to “reaffirm our position as a niche luxury cruise operator”.

He said: “Spirit of Discovery and Spirit of Adventure are the only boutique small ships being built with British market in mind.

“I firmly believe that our decision to move to all-inclusive cruising will not only sit well alongside our ‘boutique cruising’ proposition, it will also distance us further from the competition whilst giving those that choose to cruise with us an even more exclusive and value for money experience.”

The 999-passenger Spirit of Discovery will replace Saga Pearl II in July 2019 Spirit of Adventure is planned to enter service in August 2020, replacing Saga Sapphire.