81. Although not relevant to this claim, we should refer to the fact that following these
events the Secretary of State commissioned a review of the immunity arrangements for
US personnel and their families at RAF Croughton. Following that review, and
discussions between the FCO and US officials, the US agreed (i) to extend the advance
waiver of immunity from criminal jurisdiction both to all Embassy staff at RAF
Croughton (in respect of acts performed outside the course of their official duties) and
also to their family members; and (ii) to provide a new waiver of the personal
inviolability both of such Embassy staff and of their family members, for the purposes
of arrest/detention pending trial or following conviction. This waiver, which is said
to have prospective effect only, is recorded in Diplomatic Notes dated 20 July 2020.