Don't you find it a bit suspicious that after throwing away all those numbers, he was left with nobody at all billing more than £75/hr?

And realistically, is there anybody here in the UK who is not a builder's apprentice and charges less than £100 per day? Think there are any computer programmers billing out at £12/hr here?

I don't think the data was in any way ambiguous. And since he threw it out, he pretty much invalidated his survey.