Our practice

Our practice

Childrens Orthopaedic is a private orthopaedic practice based in London at The Portland Hospital, part of HCA Healthcare UK.

The practice was first established by Mr Robert Hill in October 2021, following on from his long-standing practice at The Portland Hospital. Following his retirement, Childrens Orthopaedic now consists of four paediatric orthopaedic surgeons: Miss Sarah McMahon; Mr Jonathan Wright; Mr Daniel Reed and Mr Gregory Firth.

By pooling their considerable talents alongside a wide range of specialist interests, they are able to bring the benefit of this combined expertise to the children – and the families – they see.

This also means they’re able to work together on complex cases, carrying out formal reviews as part of the Childrens Orthopaedic multidisciplinary team (MDT). They can also offer dual-consultant operating – something unique in the independent paediatric orthopaedic sector.

Similarly, the long working relationship the practice has with The Portland Hospital and HCA Healthcare UK means you’ll have exceptional access to support from a wider multidisciplinary team, including clinical nurse specialists, physiotherapists and more.

Meet your team


Miss Sarah McMahon


An experienced consultant orthopaedic and limb reconstruction surgeon, Miss McMahon specialises in children's conditions of the hip, knee, and foot as well as fracture management. She brings particular expertise in limb reconstruction, lengthening, and deformity correction.

After completing her medical training at UCL Medical School in 2003, she underwent surgical rotations at St Bartholomew's Hospital and The Royal London Hospital, where she focused on children's orthopaedics, trauma, and deformity. Following this, she completed a National Fellowship in Childrens Orthopaedics at Great Ormond Street Hospital for Children and the Royal National Orthopaedic Hospital, before going on to complete a Fellowship in Trauma and Limb Reconstruction at King's College Hospital.

Miss McMahon started her consultant career at the Royal Free Hospital before joining Great Ormond Street Hospital for Children as a consultant – a position she holds alongside her private practice at Childrens Orthopaedic.

Her goal is always to improve her patients’ quality of life and give them – and their families – the best possible outcome. That’s why she’s a passionate advocate of personalised, patient-led care, and the benefits that bespoke treatment plans bring to children with problems that were present from birth or developed due to an accident or infection.

Mr Jonathan Wright

MBBS, FRCS (Tr & Orth)

A paediatric orthopaedic and limb reconstruction surgeon, Mr Wright specialises in congenital and acquired limb deformities that require limb lengthening or reconstruction techniques. He also treats paediatric patients with non-spinal orthopaedic conditions.

After graduating from University College London in 2006, Mr Wright gained experience in paediatric orthopaedics and limb reconstruction at centres including Great Ormond Street Hospital for Children, the Royal London Hospital, and the Royal National Orthopaedic Hospital.

He completed a fellowship at the Ilizarov Scientific Centre for Restorative Traumatology and Orthopaedics in Russia, where he worked on the use of circular fixators for deformity correction and limb lengthening, and undertook a 12-month fellowship in paediatric orthopaedics at the Starship Children's Hospital in Auckland, New Zealand.

As well as his private practice at Childrens Orthopaedic, Mr Wright has an NHS practice at the Royal National Orthopaedic Hospital. Here, he focuses on paediatric congenital and acquired deformity, as well as limb reconstruction.

He has published multiple scientific papers and chapters in orthopaedic textbooks, and is a member of the British Society for Childrens Orthopaedic Surgery (BSCOS), the British Limb Reconstruction Society (BLRS), and the British Orthopaedic Association. He is also a Fellow of the Royal College of Surgeons.

Mr Daniel Reed

BA BMBCh (Oxon.) MSc FRCS (Tr &Orth)

A specialist paediatric orthopaedic surgeon, Mr Reed’s expertise is in the care of children and adolescents with musculoskeletal conditions. As well as his private practice at Childrens Orthopaedic, Mr Reed has an NHS practice at Evelina London Children's Hospital.

After graduating from Oxford University Medical School, he undertook general surgical training in Oxford and London, before orthopaedic training on the Guys & St Thomas' rotation. He completed speciality paediatric orthopaedic fellowship training at The Royal London Hospital, and then in Starship Children's Hospital, Auckland. He was appointed as a substantive consultant in paediatric orthopaedics at Evelina Childrens' Hospital in 2017, where he has been Head of Service since 2020.

Mr Reed has extensive experience managing the full spectrum of paediatric orthopaedic conditions in patients ranging from newborns to young adults. His areas of particular interest include: clubfoot (CTEV); developmental dysplasia of the hip (DDH); Perthes' disease; trauma (fractures, sports injuries), and infection. Mr Reed has an MSc in Trauma & Orthopaedic sciences, and has active research interests in paediatric musculoskeletal infection and orthopaedic care of children with cerebral palsy. A major part of his practice involves caring for children and young adults with musculoskeletal problems related to neurodisability (including, but not limited to, cerebral palsy and spina bifida).

He is a member of the British Society for Childrens Orthopaedic Surgeons (BSCOS), the British Society for Surgery in Cerebral Palsy, and the British Orthopaedic Association, and is a Fellow of The Royal College of Surgeons (England).

Mr Gregory Firth

MBBCh, FCS (Orth) SA, MMed (Orth)

A consultant orthopaedic surgeon with more than a decade’s experience in the treatment and management of paediatric orthopaedic conditions, Mr Firth has expertise in both elective and trauma-related conditions in children.

After gaining his primary medical qualification in 1999 at the University of Witwatersrand, he trained in orthopaedics at the same hospital, qualifying as a consultant in 2008, and working as a paediatric orthopaedic consultant in 2009 at Baragwanath Hospital in Soweto, South Africa.

Mr Firth then undertook two post-graduate fellowships. The first of these was at the Children's Hospital of Eastern Ontario with Dr Baxter Willis, and the second at the renowned Royal Children's Hospital, Melbourne, under Professor Kerr Graham. During his time here, Mr Firth gained extensive and valuable experience using 3D Gait Analysis, while helping children with a range of conditions, including cerebral palsy.

He then established the paediatric orthopaedic unit at Baragwanath Hospital, where he worked until 2018, when he emigrated to the UK. He worked at the Royal London Hospital until 2023, and now works at The Portland Hospital and in the Maidstone and Tunbridge Wells NHS Trust.

He is a member of the British Society for Childrens Orthopaedic Surgeons (BSCOS), the British Orthopaedic Association (BOA), the European Paediatric Orthopaedic Society (EPOS), the South African Orthopaedic Association (SAOA) and the South African Paediatric Orthopaedic Society (SAPOS).

Leanne Crichton

Practice manager

Leanne has been at Childrens Orthopaedic since it was first started by Mr Robert Hill in October 2021. Before that, she worked alongside Mr Hill at both The Portland Hospital and Great Ormond Street Hospital.

As practice manger, Leanne ensures the smooth running of the practice and is the first point of contact for parents and referrers alike. She manages the outpatient clinics, books appointments, surgeries and consultations, and is always on hand to help with any queries or concerns you may have.

You’ll find Leanne’s office on the same floor on which our consultants hold their clinics. This means she’s able to meet you and your child after you’ve had your consultation, arrange follow-up appointments and provide any assistance you might need.

If you’d like to find out more, or book a consultation, please get in touch.

To return to the homepage click here.

Get in touch 

You can book a consultation via email or our online contact form. If you’d prefer to speak to someone, you can also book by phone.


Outpatient clinics

Our consultants hold outpatient clinics at The Portland Hospital, part of HCA Healthcare UK:


Mr Reed: Monday mornings

Mr Firth: Monday afternoons

Miss McMahon: Tuesday afternoons

Mr Wright: Thursday mornings


E: childrensorthopaedic@hcahealthcare.co.uk


T: +44 (0) 20 7390 8351 
back to top