End of April and early May update 2026.

 Blanket weed growth is becoming apparent especially in the section downstream from London Bridge. It is uncertain where the nutrient is coming from to stimulate the growth of blanket weed But it could be as a result of breakdown Products From material running off of the main road i.e. oil and rubber dust as well as exhaust fumes going into solution as a nitrogenous compound.

There was even a body in the brook at Gilders!  Fools watercress is rapidly becoming established in the section along by Brook Lane.

By the 3rd week in May the flow rate was very radically reduced in the Wallen Park section.

And there was some rather mysterious scum accumulating on the surface just upstream from this section, A possibility of this sort of pollution can be seen from this road drain in Gilders where something has obviously been emptied away but will inevitably find its way into the brook.

These are the plants recorded growing along the Southbrook section on May the 20th 2026.

Lawn Daisy

Male banded demoiselle.

                                                           Chenopodium. Fat Hen.

A garden escape possibly some kind of mallow.

Hedge mustard.

Horse tails.

Common Mallow.

                                                                Meadow buttercup.

                                                                 Meadowsweet.

                                           Moss growing on concrete wall above the liverworts.

                                                                 Meadowsweet on bud.

                                                               Woody or Black Nightshade.

                                                Liverworts growing on the concrete wall.

                                                                     Pendulous sedge.