Thomson Calypso is adults onl.
Try P&O Arcadia its 18 and over all the time, others do one now and then ,a Saga cruise would do but are smaller ships.
Saga, and 2 P&O ships. Azamara, Seabourn, Silverseas, OCeania do not have childrens facilities but that does not mean you won't get ankle biters on boar.
Saga, P&O Artemis and P&O Ocean.
Anything on the arcadi.
The P&O adult only ships are Artemis and Arcadia, not Oceana.
Princess Cruises - Crown Princess - 4 Apr 2017 - 5nts
Rome (Civitavecchia) : Kotor : Corfu : Rome (Civitavecchia)
Now from £489pp
View No Fly Cruises from Southampton >>
Click here to see offer
Princess - Pacific Princess - 26 February 2017 - 22nts
UK : Hong Kong : Sanya : Singapore : Phuket : Cochin : Mumbai : Dubai : UK
Now from £1699pp
Click to View Info Page>>
Princess - Pacific Princess - 07 February 2017 - 24nts
UK : Sydney : Papua New Guinea : Yap : Koahsiung : Hong Kong : UK
Now from £1999pp
Click Here To View More Princess Cruise Deals >>