Just as a doctor and personal trainer must analyse your heartbeat differently, the network needs to be intelligent and flexible so that it can gather both small data (things that happen very quickly, like a customer's heart rising abnormally) and big data (key trends that allow the network to anticipate failures before they happen) and then makes policy-based decisions.

It doesn't happen very often, does it?" It has also been responsible for a huge spike in Ms Tyler's record sales, with digital downloads of Total Eclipse Of The Heart rising by 503% last week, with 12,000 downloads in the US.

In fact, the NHSBT released figures last month showing that despite the bigger pool of potential donors, patients face increasingly long delays, with the average wait for a new heart rising almost 70% over three years up to 2009, and the average wait for a new kidney rising 20%.