The emergency was declared to ATC straight away, the crew then advised that, after consulting with the injured parties, the best course of action was to continue onward to the UK.
As the Oceanic track was almost a direct routing anyway it had little bearing on other traffic over the Atlantic.
ATC in the UK were aware of the problem well in advance, and in their usual professional manner, afforded the aircraft the most expeditious routing available, which is no more than I or any other ATCO would do, or be expected to do under the circumstances.
The captain made his decision in conjunction with those who were injured and after taking medical advice from those who are qualified, via BA Ops.
A very unpleasant experience for all involved, but as with everything at the sharp end of aviation, decisions are made utilising your training, experience and information available, all of happened in this instance.
I hope I never have to work or fly as passenger with A330driver in any capacity.