Mr Peter Calder is a Consultant Paediatric Orthopaedic Surgeon currently working at The Portland Hospital for Women and Children. He also holds an NHS post at the Royal National Orthopaedic Hospital NHS Trust. His specialism is in orthopaedics, with particular interests in trauma, limb reconstruction, congenital conditions, and limb deformity correction.

Mr Calder graduated from the University of London in 1993 with Bachelor of Medicine and Bachelor of Surgery degrees. He completed his general surgical training on the St Bartholomew's basic surgical rotation and advanced to become a Specialist Orthopaedic Registrar through the Royal London Training Programme. He further honed his expertise with a Fellowship in Paediatric Orthopaedics at Great Ormond Street Hospital.

In addition to his clinical work, Mr Calder is a prolific contributor to peer-reviewed scientific journals and is frequently invited to lecture on paediatric conditions. He is an active member of several professional organisations, including the British Society of Children's Orthopaedic Surgery.

Mr Calder's expertise encompasses a range of procedures and treatments, including knee preservation surgery, revision surgery, trauma care, limb reconstruction, and the correction of congenital and limb deformities. He has been serving in his current roles since his appointment and continues to be a leading figure in paediatric orthopaedics.