Question: when is hms queen elizabeth due back into portsmouth?
Answer: On 18 August 2018, Queen Elizabeth, sailed from Portsmouth on what was termed as "Westlant 18", carrying three Merlin Mk2 helicopters of 820 NAS. Later, on 20 August 2018, three additional Merlin Mk4 helicopters from 845 NAS were embarked to the ship.