text: (2) For the purposes of sub-paragraph (1), “network and information” system has the meaning in 
  regulation 1(2) of the Network and Information Systems Regulations 2018(**a**). 
  
  **40.**A person who is engaged in urgent or essential work— 
  (a) that is necessary for the continued operation of— 
  
  (i) electronic communications networks and services as defined in section 32 of the 
  
  Communications Act 2003(**b**), or 
  
  (ii) the BBC’s broadcasting transmission network and services; 
  
  (b) in associated supply chain companies that maintain the confidentiality, integrity, and 
  availability of the electronic communications networks and services and the BBC 
  transmission network and services, 
  
  where they have travelled to the United Kingdom in the course of their work. 
  
  **41.**A person— 
  
  (a) who is engaged in the installation, maintenance or repair of subsea fibre optic 
  telecommunications infrastructure; 
  
  (b) whose role directly supports the installation, maintenance or repair of subsea fibre optic 
  
  telecommunications infrastructure, 
  
  where they have travelled to the United Kingdom in the course of their work. 
  
  **42.**—(1) A person ordinarily resident in the United Kingdom and who pursues a work-related 
  activity in another country to which they usually travel at least once a week which is certified by 
  their employer, or in the case of a self-employed person certified by them, as being— 
  
  (a) an activity that cannot be done remotely; and 
  (b) critical. 
  
  (2) For the purposes of sub-paragraph (1), an activity is critical if— 
  
  (a) it would be defined as critical, or equivalent terminology, in legislation or guidance in use 
  
  in that country; or 
  
  (b) if the country has no such definition, if a person is pursuing an activity which would fall 
  under one of the other paragraphs in this Schedule if it were carried out in the United 
  Kingdom. 