Find Your Cruise
Several cruise lines have single cabins. They will be more expensive per person than other cabins but should be cheaper than double cabins with single occupancy. Try Fred. Olsen, SAGA, P&O and you will get full details from their brochures.
You might try (sorry Victoria Travel) vacationstogo as they are running a special article on "Singles Travel" ... regards Nei.
Ride the grand princess.