CountryActionAction DateEffective Date
Aden ColonyExtension20/07/193920/07/1939
AshantiExtension27/01/1924
AustraliaExtension22/06/1928
BahamasAccession27/01/1924
BarbadosAccession27/01/1924
BasutolandExtension01/08/1932
Bechuanaland ProtectorateExtension01/08/1932
BermudaAccession27/01/1924
British GuianaAccession27/01/1924
British HondurasAccession27/01/1924
CanadaExtension29/11/192829/11/1928
Cayman IslandsAccession27/01/1924
CeylonAccession27/01/1924
Channel IslandsExtension18/04/193518/04/1935
CyprusAccession27/01/1924
Falkland IslandsExtension22/06/1928
FijiAccession27/01/1924
FRANCESignature02/02/1922
FRANCERatification02/05/192202/07/1922
French ColoniesExtension01/01/1923
French GuianaExtension01/08/193301/08/1933
French OceaniaExtension01/08/193301/08/1933
GambiaExtension27/01/1924
GibraltarAccession27/01/1924
Gilbert And Ellice IslandsAccession27/01/1924
Gold CoastExtension27/01/1924
GrenadaAccession27/01/1924
GuineaExtension22/06/1928
Hong KongAccession27/01/1924
Irish Free StateExtension27/10/192727/10/1927
Isle of ManExtension18/04/193518/04/1935
JamaicaAccession27/01/1924
KenyaExtension27/01/1924
LebanonExtension05/10/1928
Leeward IslandsAccession27/01/1924
Malay StatesAccession27/01/1924
MaltaAccession27/01/1924
MauritiusAccession27/01/1924
NauruExtension19/11/193319/11/1933
New HebridesAccession27/01/1924
New ZealandExtension01/01/192801/01/1928
Newfoundland (UK)Accession22/03/1923
NigeriaExtension27/01/1924
Norfolk IslandExtension22/06/1928
North BorneoExtension09/10/193009/10/1930
Northern IrelandExtension27/10/192727/10/1927
Northern RhodesiaAccession27/01/1924
NyasalandAccession27/01/1924
PalestineAccession22/03/1923
PapuaExtension22/06/1928
SarawakExtension24/10/193024/10/1930
ScotlandExtension01/11/193001/11/1930
SeychellesAccession27/01/1924
Sierra LeoneExtension27/01/1924
Solomon IslandsAccession27/01/1924
Somaliland ProtectorateAccession27/01/1924
Southern RhodesiaExtension07/05/193307/05/1933
Sovereign Base Areas
St Helena And AscensionExtension22/06/1928
St LuciaAccession27/01/1924
St VincentAccession27/01/1924
Straits SettlementsAccession27/01/1924
SwazilandExtension01/08/1932
SyriaExtension05/10/1928
TanganyikaAccession27/01/1924
TongaExtension27/01/1924
TrinidadExtension27/01/1924
Trinidad And TobagoExtension27/01/1924
Turks And Caicos IslandsAccession27/01/1924
UgandaAccession27/01/1924
UNITED KINGDOMSignature02/02/1922
UNITED KINGDOMRatification02/05/192202/07/1922
Western SamoaExtension01/01/192801/01/1928
ZanzibarAccession27/01/1924