*"UK maths degrees include a high component of physics". Is that right? Not disputing it, but a course in physics at university too and I know my maths helped my physics but not the other way around.
Maybe applied maths uses physics?*
A lot of "applied maths" is actually physics these days, and many "applied maths" groups call themselves "applied maths and theoretical physics" as a consequence, see
www.damtp.cam.ac.uk
The Cambridge maths admissions guide discusses which colleges insist on physics for maths entrance (most of them).
Look at the courses offered by virtually any maths degree in the UK and you will notice a lot of modules with physics titles. Most theoretical physicists are based in maths departments in the UK. A lot of theoretical physics is returned under the maths panel of the Research Excellence Framework rather than the physics panel.
Unfortunately it seems to come as a shock to many maths undergraduates that applied maths at university is not 17th century mechanics (as it is at A level), but modern day physics, engineering and mathematical biology.
So we don't consider whether they are best mathematicians from the best universities. Fair enough, might be different recruiting for purely mathematical jobs.
It is very different when recruiting for purely mathematical jobs, although broader skill sets definitely play a role as well as ability and achievement in mathematics.
Even if you give your life to academia, you probably still have to teach, or at least tutor, so its always better to be able to emphasise with others and ability to explain what you mean.
Even if you don't teach, you still have to get research grants to get on in academia, which definitely requires very strong communication and leadership skills.