Will people who do not know the facts please stop posting answers that are factually incorrect......that is directed at you Cris R.
Now, the truth is:
Greece: EU and EEA nationals are only required to produce evidence of their EU nationality and identity in order to be admitted to any EU Member State. This evidence can take the form of a valid national passport or national identity card. Either is acceptable.
Turkey: Passport valid for at least three months from date of departure from Turkey required by UK nationals