The State Should Own You
I don't have figures for the British army, but I see no reason why this should be dramatically different here. In any case, the idea that the state should compel people to join the army in order to fulfil some arbitrary 'representation' quota strikes me as bizarre in the extreme. Conscript armies do not, shall we say, have a happy history - look at Russia's continuing problems if you want an illustration.
If I find Hari's first argument unconvincing, I find his second bizarre to the point of absurdity. One of the features of a conscript army is that it is not as good as a volunteer army. As Nelson said, 'better one volunteer than three pressed men.' The Americans in Vietnam suffered because its troops had not chosen to be there, knew their tour of duty was short and, as a result, got their heads down - to the point of mutiny when ordered into combat. The Tsarist army in the First World War mutinied and deserted in droves, allowing the Germans to advance all the way to Brest Litovsk. A conscript army isn't nearly as effective a fightig force a sa volunteer force. Even when conscript forces have become good combat forces (the BEF in 1916-1918 for example) they are still not as good as regulars (the BEF in 1914-1916 for example).
This, for Hari is a good thing. We should prioritise having an army that makes fighting wars more difficult over an army that makes winning wars more likely. I'm quite amazed at the stupidity of this - we should deliberately diminish the efficacy of our armed forces to make Hari and like-minded people feel better about themselves; we should re-introduce conscription in order to socially-engineer the army. Gah.
UPDATE: See also Tim and Chris.