They are among a group of 28 ambassadors and high commissioners appointed in 2015.
The others are to be replaced within the next three months, say government sources.
A career diplomat gets a posting for a period of three years, while the term of a non-career appointee is two years.
10 top diplomats to be recalled immediately Featured
The government is to immediately recall around 10 top diplomats overseas, who are said to be political appointees during the previous government.