As an update to the pollution incident, I contacted the environment agency and the local duty officer said that it is a known outfall and has been tested and is legally allowed, he assured me that although it looks bad it is not harmful

That doesn’t look good. Second link works

2 Spoonbills at high tide around 13:30 today and around 50 Knot with the Blackwits.  Just before i left there was a release of awful looking affluent from the old pipe on the left below the sluice, surely this can’t be good, video on this link https://1drv.ms/v/s!AsDSaGQBdM5Ihqh6pKbWpsaMsEvLHw?e=geqJa8
There seems to be a problem with the link, this one should work https://www.dropbox.com/scl/fi/3w9vcrcy621k9szgnh3lv/DSCN8550.MP4?rlkey=myuez5wlyce2bc79egtbn7kxm&dl=0

Also 1 Spoonbill (seen by Martin Sage earlier in the week) this time on a falling tide with gulls ion the muddy spit below the sluice. First foir me here - species no 148…

A good roost of birds at high tide today opposite the sluice. Largely Redshank and Black-headed Gulls but 30 or so Black-tailed Godwit, a few Knot, 1 Curlew, A flock of Avocet flew up river , 1 Kestrel , 1 juvenile Grey Wagtail and the usual Little Egret , Canada Geese, Herring and Lesser Blacked-backed Gulls.