These Regulations which apply to Great Britain, implement Council Directive 93/53 EC introducing minimum Community measures for the control of certain fish diseases. The Regulations, inter alia: (a) require that an official census be kept of the fish populations on farms which are suspected of being infected (reg. 3); (b) set out the control measures to be taken when the presence of a disease in Part I of Schedule 3 is suspected (reg. 4); (c) set out the control measures to be taken when the pre