Throughout his life Sid made a unique contribution to motor sport, particularly in improving safety for F1 drivers, officials and spectators around the world.
He was highly respected as an acclaimed neurosurgeon, F1 medical delegate, chairman of the FIA Expert Advisory Safety Committee, and as the first President of the FIA Institute.
Sid's experience, intelligence and endearing humor will be forever greatly missed.
Our thoughts are with the Watkins family at this difficult time.
Jean Todt, FIA President, said: "This is a truly sad day for the FIA family and the entire motor sport community. Sid was loved and respected in equal measure by all those who knew and worked with him. We will always be grateful for the safety legacy that he has left our sport."
Gerard Saillant, FIA Institute President, said: "Sid was a true gentleman of our sport and always a pleasure to work with. He will be sorely missed by everyone who knew him, from doctors and drivers to officials and fans. Sid's influence will live on for many years to come."