I have been following this in The Sunday Times and The Times.
From the reports in the newspapers the incident occurred shortly after take-off. The articles state that a junior doctor was giving CPR. It is is difficult to understand why the commander continued on a 1h50 minute flight and did not divert to an en route airport of which there are many.
Isn't a Mayday, medical emergency, with medical assistance on arrival, normal procedure in such circumstances?