http://www.legislation.gov.uk/uksi/2011/9/madeThe Air Navigation (Restriction of Flying) (Ford Prison) Regulations 2011King's Printer of Acts of Parliament2011-01-13 The Air Navigation (Restriction of Flying) (Ford Prison) Regulations 2011RegulationsThe Air Navigation (Restriction of Flying) (Ford Prison) (Revocation) Regulations 2011reg. 2reg. 1