So it would be legal for my passenger to land the aeroplane?
There is nothing in UK law specifically to prevent a passenger from handing the controls in any phase of a private flight. However, it is an offence to recklessly or negligently act in a manner likely to endanger an aircraft. In the event of an accident, you might have to prove that your actions in allowing your passenger to handle the aircraft controls in a critical phase of flight did not constitute such an offence.
I am not an instructor.
An instructor rating is required
only to give instruction to a person for the purpose of becoming qualified for the grant of a pilot's licence or the inclusion or variation of any rating or qualification in a pilot's licence.