[Margaret Pilkington]

from what I have read, it seems that the NHS wants to export the expertise that is found in some centres of excellence(the Royal Marsden, and GOSH being two quoted).....I can't see how this is possible, without taking those with the expertise out of the services in this country.

The NHS would be far better at concentrating on getting the money for treatment from those who should be paying for it, because they are not eligible for free treatment.
Or running private services in NHS sites(I shudder at this thought, because I hate private care) at least if this option were employed the medical specialists would be here in this country rather than in China or Saudi.