The National Statistician is the Chief Executive of the UK Statistics Authority, and the Head of the UK Government Statistical Service.
The office was created by the Statistics and Registration Service Act 2007. The current office holder is John Pullinger.
They are de facto Permanent Secretaries but do not use that title. As the ONS incorporated the OPCS, the Director also became the Registrar General for England and Wales. Following the implementation of the Statistics and Registration Service Act 2007, the General Register Office continues to be part of a ministerially-accountable department, becoming a part of the Identity & Passport Service in the Home Office and the post of Registrar-General is now held by its head.