Thinking about it I have changed my mind (apologies!) and freely admit to not actually finding Kate irritating in this programme - I think it was just a small part of one of the "trailers" in which this gave such an impression - she was actually a jolly good choice! - although she might not have thought so, judging by the number of times during the trips when she was clearly W A Y outside her comfort zone.
However, I did wake up thinking that, of all the TV organisations, it was a bit of a poor show of the BBC to have a spelling mistake in the subtitles in the Swildon's footage where they had written "scew" instead of "skew", talking about Kate's helmet being slightly to one side (normally something this trivial would be overlooked and not worth a second mention but.... the BBC!!! - how can this happen? - a silly oversight and probably best ignored but....).
One other thing; I got the distinct impression that there was some "helping" going on during the long ascent (but frankly that's hardly surprising if it's true).
Overall, however, I think it was a superb addition to the "good news" stories about caving and, despite the effusive adjectives, should do wonders to fire up people who will want to have a go - it should certainly help to filter out the faint-hearted!
Can we have more, please?