To ask the Secretary of State for Defence, how many (a) Captains and (b) Commanders were employed by the Royal Navy in each of the last five years.

The information requested, as at 1 March of each year, is provided below:

Notes:

1. Includes total trained Regular and Full-Time Reserve Service Regular personnel
2. Based on Paid Rank.
3. In line with published data, all numbers have been rounded to the nearest 10, with Numbers ending in 5 rounded to the nearest multiple of 20 to avoid bias.