Loads in the canal. Is it duck weed?
No interactions present.
Canadian pond-weed Elodea canadensis, I think.
This is Canadian pondweed
Geberally a brighter green in summer months
Sorry I hadn't looked at notes added. Duckweeds are small (less than a cm across) and FLOAT at or near the surface. If you move this to the "plants" section you are more likely to get an id to species
Lat/Lng: 53.6, -1.0
OS grid ref: SE6912