Buying back the empty bottle of whisky you've lended ...
"This may not be so much a case of outsourcing education to India, as buying back in expertise which we have mostly lost."
Possibly. However, being an ex expert in super-computing, thus exposed to maths and physics, and having found myself in a company where half of my colleagues are from India, I can tell you maths have vanished from the indian education scheme most likely 1 generation back !
This has apparently been done in order to build technology awareness (ya know, windows, next, next behaviour :-).
Dunno about the Brits (my record is pretty good on that) but you might just get an empty bottle, after this buy back ...