According to the GMC ( General Medical Council the Governing Body for Doctors in the UK ) When you carry out an intimate examination, you should offer the patient the option of having an impartial observer (a chaperone) present wherever possible. This applies whether or not you are the same gender as the patient .
A chaperone should usually be a health professional and you must be satisfied that the chaperone will:
a. be sensitive and respect the patient’s dignity and confidentiality
b. reassure the patient if they show signs of distress or discomfort
c. be familiar with the procedures involved in a routine intimate examination
d. stay for the whole examination and be able to see what the doctor is doing, if practical
e. be prepared to raise concerns if they are concerned about the doctor’s behaviour or actions.
A relative or friend of the patient is not an impartial observer and so would not usually be a suitable chaperone, but you should comply with a reasonable request to have such a person present as well as a chaperone.
So any UK partner that wants to stay with their partner take note of what has been said by the GMC about being allowed to stay " you should comply with a reasonable request to have such a person present as well as a chaperone".