text: (**a**) Article 4(1) of the Channel Tunnel (International Arrangements) Order 1993 (S.I. 1993/1813) has the effect of extending all 
  frontier control enactments to the control zone in France. A “frontier control enactment” is an enactment which contains 
  provision relating to frontier controls and the definition of “frontier controls” in Schedule 1 to that Order includes controls 
  in relation to health. The Public Health (Control of Disease) Act 1984 and these Regulations made under it therefore apply 
  in the control zone. 