Meet the

The Effect Doctors team comprises a diverse group of highly trained specialists and NHS-trained medical professionals.

Our primary goal is to provide our customers with the highest level of care.

Our treatments are designed in-house and built upon safe and effective care developed from our combined years of medical and professional training.

Dr William Turner

Medical Director & Co-Founder


Dr Turner is an anaesthetic trainee in London and a fellow of the Royal College of Anaesthetists; he is a founding member of Effect Doctors.

As well as an honours degree in medicine, he also holds a masters degree in chemistry from the University of Nottingham. Will enjoys teaching and acts as faculty, leading several national simulation and training courses. He has also published several articles in various international scientific journals.

He has undertaken a research and clinical fellowship in Obstetric Anaesthesia at the Mount Sinai Hospital in Toronto.

Alongside his anaesthesia and critical care training, he has established a successful aesthetic practice, delivering anti-wrinkle treatment to a wide-ranging group of regular clients in South London and Surrey.

Outside of medicine, he enjoys playing rugby, cooking and listening to music.


Elsapeth McGuire

Lead Nurse


Elsapeth is an oncology nurse specialist who completed her Bachelor of Science degree at Sheffield Hallam University, gaining a first-class honours degree in adult nursing.

She completed a post-graduate degree in oncological care through the University of East Anglia and Royal Marsden School in 2020.

She has a wide range of experience from working in various posts within the NHS, including several years spent at the Royal Marsden Hospital, where she specialised in the administration of systemic anti-cancer treatments and undertook staff education and training in clinical practice.

Outside of medicine, she enjoys travelling the globe, reading and dog walking.



Dr Haroon Hamid

Aesthetics Lead


Dr Haroon Hamid graduated from the University of Liverpool in 2017. Alongside a medical degree, he also holds a Masters in Research degree also from Liverpool University, having undertaken an Epilepsy-based research programme.

Haroon oversees all aesthetic injectable and Skincare treatments and is an Obagi Skincare prescriber providing clients with medical-grade long-term skincare regimes, where required.

He has undertaken the Level 7 Aesthetics and Dermatology Course with Harley Academy and additional training in the delivery of Profhilo® facial treatments.

He is currently a GP trainee with ‘special interest’ skills in minor surgery, joint injection and Dermatology. With a keen interest in research and public health, he has presented research from numerous projects at both UK and European conferences.

Outside of medicine, he enjoys photography, literature, music and football.


Dr Johnny Andrews



Dr Johnny Andrews splits his time working in several NHS Accident & Emergency Departments, working on clinical drug and viral trials and working with start-ups and private clinics in London.

With a BMedSc (Hons) from the University of Birmingham underpinning his scientific knowledge, Johnny has developed a keen interest in business after working in corporate sales and hospitality before graduating in Medicine from the University of London in 2015.

A dynamic member of the Effect Doctors team since 2018, Johnny is an experienced practitioner, having treated many of our patients at homes, offices, pop-up events, and music festivals across the country.

Johnny works to oversee all CQC-regulated and UKAS-registered activities within Effect Doctors.

Outside of work, he enjoys music, travelling and long walks with his dog.

Alessandra Marchington

COVID Testing Lead


Alessandra graduated from Bristol University with a BSc in Cellular and Molecular Medicine.

Alessandra leads the Effect Doctors’ COVID testing team, delivering our wide range of testing options to workers and travellers across the country.

She likes to spend time outdoors and enjoys hiking, dog-walking, and park runs in her free time.


Alessandra profile

Wendy Cragg

Business Manager


An established and committed manager with 20 years of experience in operational duties. Wendy joined EffectDoctors in 2019, overseeing all day to day activities of the company.

Implementing systems and processes and proactively seeking solutions in an ever-changing landscape, Wendy never shies away from a challenge.

Outside of running Effect Doctors, she is a busy young mother, enjoys walking her dog, red wine and international travel.

Sara Malik

Design Lead


Sara has worked with notable art directors in New York City for over a decade on campaigns for H&M, Gillette, Alexander Wang, Fendi and more. Sara has a passion for creating market sound campaigns and brand identities with a commitment to self-development and creative innovation.

She is also a published writer, having interviewed the likes of Stella McCartney and Bjarke Ingels. Sara’s creativity is a driving force behind the evolution of the Effect Doctors aesthetic narrative.

In her free time, she enjoys playing with new mediums in her art studio.

Kate De'Ath

Chief Marketing Advisor


Kate has over 14 years of experience in luxury lifestyle marketing. She started her career at Ralph Lauren and eventually became their International Corporate Marketing and Brand Director.

In recent years Kate expanded her luxury knowledge into the world of hospitality and fine wine. She was the Marketing Director overseeing Capri Palace, D Maris Bay, Macakizi and Villa Magna alongside Ornellaia and Masetto wineries. Most recently, Kate held the role of Group Marketing & PR Director of Caprice Holdings.

She has an exceptional portfolio of International partners across all luxury lifestyle categories. Kate specialises in driving brand growth, strategic partnerships and crafting 360-degree marketing strategies. Her motto is “we can”, and she always does!