The flag of Montserrat consists of a Blue Ensign with the British overseas territory's coat of arms.

It was later colonised by the Kingdom of England in 1632, when Thomas Warner – the first governor of Saint Christopher – sent Irish Catholics from his island to Montserrat.

[7] To coincide with the Diamond Jubilee of Elizabeth II in 2012, the Foreign and Commonwealth Office started flying the flags of overseas territories over its Main Building in Whitehall to commemorate a "significant day in each of their respective histories".

[11] The cross alludes to the Christian heritage of the island,[15][A] while the woman's hold of it signifies the Montserratians' love of Christ.

[17] The Blue Ensign is also employed on the flags of eight of the thirteen other British Overseas Territories, with their coats of arms in the fly being the only distinguishing feature between them.