Ah, OK, well firstly there are a couple of legit looking climbs on Strava, like the Great Dun Fell and one particular approach to Bealach na Ba, which I'm sure touch can tell us all about. Secondly, and more pertinently, you've got the issue of how climbs in races are actually categorised, which is a bit of a black art, and includes many factors such as the length of the stage, where the climb falls in that stage, how many other climbs are in the stage, etc. A nasty cat 4 at the end of a long stage in a TdF stage could easily get bumped to cat 3, for example. In the case of the ToB I imagine there will be a bit of climb inflation in saying the Nick O' Pendle is a cat 1, just to make the race sound more interesting, but equally it comes at 1 mile into quite a hilly stage, so they'll have increased it on those grounds as well.
For the record, the Nick O' Pendle is a cat 4 per Strava, so cat 1 seems a bit of a stretch, and the Bleara Moor climb is a cat 3, so again cat 1 is a stretch, but not quite so much!
I guess in this country they've got to strike a balance between suitably challenging climbs and roads that actually have a surface you can ride a race weight tubular tyre on for more than 20 yards...