i'm wondering whether the fact that it is in UK is important, ie. wrt. who paid for the [experimental] surgery. As we all know, while coming up with idea is great, an actual implementation faces the issues of resources/money.
UK or not is probably not too important. The surgeon mentioned (Tom Treasure) is at University College London (his surgery is likely based at Guy's Hospital, as mentioned in the OP). This was most likely the beneficiary of a grant for medical innovations, funded by either the NHS or one of the non-profits such as the Wellcome Trust or the British Heart Foundation.
