We were almost at the end of the training expedition and there had been no sign of the threatened 'dip' into icy water....the team thought they had had a narrow escape....and then we passed a stream.

There wasn't much water, but enough to provide the team members with a sudden shock of exposure to the cold. On our way to the North Pole we will be spending time on a thinly frozen ocean - so it is a prudent drill to practise what we would do if we fell into water.

The team threw themselves into it (quite literally) with gusto.