As they are currently only deployed in one theatre to the tune of 4,000 personnel until the end of this year I hardly see that we have 'too few of everything.'
As a
barrister, surely you should realise that making unsubstantiated assertions doesn't make them into facts either. You need to do a bit more Googling to check up on your facts.
The British armed forces are NOT shrinking to the point at which they are becoming unable to do their job just because you say they are.
Nor does you saying otherwise make it anymore true! The British Armed Forces certainly can't do long range maritime patrol any more; in a year or two they may not be able to do significant elements of battlefield recce, nor the comms fleet task, and any number of other tasks/roles. I would say that is shrinking to the point that they are unable to do their job.