The attrition over the last 10 years was touched on briefly. There were, I think, a number of different triggers along the way, but one significant trigger at one point was the introduction of the reserve force pension, which allowed a whole lot of people to make the decision that now was a good time to component transfer to the regular force. There were a series of one-offs, year-by-year triggers for perhaps higher-than-normal levels of attrition. However, we have stabilized over the last few years.
On February 9th, 2017. See this statement in context.