We've now got 2 topics discussing the same program but thought I would add my comment here.
The problem was that you can't look at 100 walks in the time that they had but, because the top few walks were quite similar, they wanted to show a range of walks from the whole list so there were long sections of 'Walk 79 is X, walk 78 is Y'. When we had 5-10 minutes on the featured walks that was OK.
I would love to know the methodology of how they gathered the statistics as some of the walks it was obvious that people had voted for the walk its self, WHW for example, but did lots of people vote for just 1 route up Snowdon?
I wasn't sure of how the poll worked and 8000 total votes really isn't much (I'd reckon by my simple distributional maths you could have made the top 100 with about 20-30 votes.
It depends what people were asked it could be;
What is the best walk in Britain?
or
What are the top 10 walks in Britain?
or
From this predetermined list rank the top 100 walks.