Defence output in this form is difficult to measure and value - what is the output of UK defence spending and is it a worthwhile investment?

BBC: Viewpoints: Future of the British army

Roberts, 23, however, is a hugely athletic rugby player who became an instant hit on the British and Irish Lions tour to South Africa only to find himself in difficult circumstances thus far this season: off-form and suffering from second-season syndrome.

BBC: Fans disappointed by Wales slump

That said, its pebble-like form factor nearly got buried in our hands and it was difficult to see even the most trivial of apps, thanks to the vastly limited screen real estate.

ENGADGET

Testing for EPO directly is difficult because the synthetic version is almost indistinguishable from its natural form - a version of the hormone was originally created to treat severe anaemia.

BBC: Starting blocks