About Dr Michael Gonevski

Dr Michael Gonevski is an Approved Doctor for the Maritime and Coastguard Agency, an Approved Medical Examiner of Divers (AMED) for the UK Health and Safety Executive (HSE), a medical referee for the UK Diving Medical Committee (UKDMC), medical examiner for the Offshore Energies UK (formerly Oil and Gas UK), and an HSE Approved Doctor for Compressed Air Work and Asbestos.

He provides recreational and commercial diving medicals, medicals for the maritime industry, for the offshore industry, compressed air work, and asbestos work medicals.

Medicals and Prices

We provide medicals for the maritime industry, for the offshore industry, commercial and recreational diving medicals, compressed air work, and asbestos work medical

ENG1 Seafarer Medical
ML5 Seafarer Medical
HSE Commercial Diving Medical
Offshore Energies UK (OEUK) Medical
Recreational Diving Medical
Combined and Standalone Medicals
Compressed Air Work Medical
Asbestos Work Medical


For questions and inquiries, do not hesitate to contact us.

What is a Chester Step Test?

The Chester Step Test (CST) is a multistage aerobic capacity test. It requires you to step on and off a 30 cm / 12″ step (a standard gym bench). It consists of five levels, each of them with two-minute duration. The test should be discontinued when the candidate reaches around 80% of their calculated age-based heart rate maximum or completes the fifth level, whichever comes first.

How long is my medical valid for?

The Seafarers’ Medical is valid for 2 years unless you are under 18 years of age, where the validity is 1 year.
The HSE Medical, if unrestricted, is valid for 1 year from the issue date. If any restrictions apply, the certificate may be limited to a specific activity or a period of time.
OEUK Medical is usually valid for 2 years.
Recreational diving medicals are issued for 1 year unless particularly stated otherwise.
Asbestos Medicals are valid for 2 years.
Compressed air workers are subject to a monthly or a yearly medical assessment.

When will I know the result of the medical?

The assessment is usually pretty straightforward, and you will know the outcome by the end of your examination.

How long does the medical take?

The duration of the medical is usually 45 minutes, but this can vary slightly depending on the type of medical.

What does my medical involve?

There are different requirements for fitness depending on the purpose of the Medical. In section Medicals, under the chosen type of medical you can find out more about the specific medical itself. At completion of your booking, you will receive a confirmation e-mail with detailed information about the medical you have booked, including all you need to have with you to arrive prepared for your appointment. For further questions you can e-mail us at: doctor@tridenthyperbaric.co.uk

What if I need to change or cancel my booking?

We are committed to ensure we respond to all booking requirements of our clients.
In the event of unanticipated circumstances that will prevent you from showing at your appointment, you can call us or write to us to change or cancel your booking. We will try our best to accommodate your booking requirements without applying any fees, provided you contact us at least 48 hours in advance prior to your appointment day. However, no refunds can be processed for changes requested after the 48 hours’ notice period.

What do I need to bring with me at the appointment?

For the purpose of issuing any professional medical fitness certificate, you will need to present a photo ID, which must be either an original passport, driving licence, or a discharge book/seaman's card (for the Seafarers certificates only). Please note that no other forms of ID are acceptable, and neither are photocopies, scans, or other images.