The British Government announced in 1960 that it would withdraw all military forces from East of Suez by the end of 1971 except for a small garrison in Hong Kong (a policy which ie under review by the recently elected Heath government). Thereafter, units would return only for exercise purposes.
Coye, Beth F.
"An Evaluation of U.S. Naval Presence in the Indian Ocean,"
Naval War College Review: Vol. 23
, Article 5.
Available at: https://digital-commons.usnwc.edu/nwc-review/vol23/iss8/5