name: Security Service
notes: MI5 is not subject to FOIA and therefore will not process FOIA requests. Under Regulation 4 of the Environmental Information Regulations (EIR), environmental information relevant to the functions of the Security Services, which does not adversely affect national security can be requested.
  
  MI5 proactive publish some environmental information on their website at:
  https://www.mi5.gov.uk/output/environmental-information.html