Which troops repeated interwar amphibious exercises?

Did the same brigades take part in the amphibious exercises every year?

Not in Britain, but Ceylon's exercises often used Gurkha brigades, while Royal Marines generally operated in smaller detachments.

The British did not run every exercise with exactly the same formations. South-coast events rotated British Army brigades, while the Ceylon exercises appear to have relied repeatedly on Gurkha units of the British Indian Army. Royal Marines participated too, but mainly as shipboard detachments or smaller landing parties. The distinction matters because the recurring brigade-scale amphibious force in the Far East was often Army rather than Marine.