[3] It was expanded during 2015 at a cost of £13 million to provide 43 en-suite patient rooms, four operating theatres, an Endoscopy Suite, Physiotherapy Suite, 15 outpatient rooms, and a private GP service.

[4] Neurosurgery services were expanded in 2013 with the recruitment of consultant neurosurgeon Mary Murphy.

[5] On 28 September 2021, it was announced that Highgate Private Hospital had become part of Nuffield Health.

This was part of a wider agreement that includes Parkside Private Hospital, The Holly Private Hospital, Cancer Centre London, The Edinburgh Clinic and Aspen Healthcare Corporate Office.

[6] Highgate Hospital is part of the NHS patient choice scheme, meaning patients can opt to have procedures performed there rather than in an NHS hospital.