S T A T U T O R Y I N S T R U M E N T S 2021 No. 590  CIVIL AVIATION  The Air Navigation (Restriction of Flying) (Stonehenge)  Regulations 2021  The Secretary of State has decided that it is in the public interest to restrict flying in the vicinity of  Stonehenge, Wiltshire, by reason of the intended gathering of a large number of persons for the  Summer and Winter Solstice events scheduled to be held there.  The Secretary of State makes the following Regulations in exercise of the powers conferred by  article 239 of the Air Navigation Order 2016( a ).  1.  These Regulations may be cited as the Air Navigation (Restriction of Flying) (Stonehenge)  Regulations 2021 and come into force on 20th June 2021.  2.  In regulation 3(1) the times referred to are Co-ordinated Universal Time( b ).  3. —(1) Subject to paragraph (2), no aircraft is to fly below 3,000 feet above mean sea level  within the area bounded by a circle having a radius of 3 nautical miles whose centre is at 511044N  0014934W between—  Citation and commencement  Interpretation  Restricted airspace  (a) 1700 hours on 20th June and 1100 hours on 21st June 2021, and  (b) 2100 hours on 21st December and 1100 hours on 22nd December 2021.  (a) operating by or on behalf of—  (i) the Helicopter Emergency Services, or  (ii) the National Police Air Service,  (b) flying—  (i) with the permission of Wiltshire Police,  (2) Paragraph (1) does not apply to any aircraft—  ( a ) S.I. 2016/765, to which there are amendments not relevant to these Regulations.  ( b ) Co-ordinated Universal Time (UTC) is one hour behind British Summer Time (BST) in regulation 3(1)(a) and is the same  time as Greenwich Mean Time (GMT) in regulation (3)(1)(b).  Made - - - - 18th May 2021  Coming into force - - 20th June 2021 