I have camped on the south bank of the river near the bridge. There is a nice flat pitch there, room for quite a few tents if I remember rightly.

In 2015 I camped short of the bridge at NH306141 and it was so exposed, on a very windy night, that I regretted it greatly! It was a nice pitch with good views (if you ignored the pylons) but I should have moved when the wind got up. My stubbornness/laziness led to me having to do some minor repairs to my tent when I pitched near Chalybeate two nights later.

I can't remember the detail but I'm pretty sure down by the river would be better.

Hi, last year I crossed the bridge and turned left. After about 100m cut back towards the river and you will find a couple of suitable spots.