The GMC Good Medical Practice says
10. Wherever possible, you should offer the patient the security of having an impartial observer (a 'chaperone') present during an intimate examination. This applies whether or not you are the same gender as the patient.
11. A chaperone does not have to be medically qualified but will ideally
be sensitive, and respectful of the patient's dignity and confidentiality
be prepared to reassure the patient if they show signs of distress or discomfort
be familiar with the procedures involved in a routine intimate examination
be prepared to raise concerns about a doctor if misconduct occurs.
In some circumstances, a member of practice staff, or a relative or friend of the patient may be an acceptable chaperone.
Several PCTs and private training companies run courses for "Chaperone Training for Non-Medical General Practice Staff" which you may find useful for your staff.