Home2021 Treaties and Agreements ...United Kingdom (21-325) – Air Transport Agreement hide United Kingdom (21-325) – Air Transport Agreement TIAS Office of Treaty Affairs March 25, 2021 Transportation: Aviation Transport Services Signed at Washington and London November 10 and 17, 2020; entered into force March 25, 2021. With Annexes. Download Agreement [2 MB] Tags Air Transport Agreements Transportation Treaties United Kingdom