Example Drain Marking Schemes


Peterborough Yellow Fish – Peterborough City Council’s campaign uses Happy Yellow Fish markers as part of a wide ranging engagement campaign.

Action for River Kennet – Community Yellow Fish marking programme supported by Thames Water.

Yellow Fish Wales – Keep Wales Tidy, Natural Resources Wales and Dwr Cymru drain marking campaign.

Morecambe Bay Partnership – Our markers have been used to highlight the risk of pollution from surface water drains around the Bay.

Thames21 – Only Rain Down the Drain marking programme.


Engagement Material

Healthy River Code – Use our markers as part of the code and improve the health of your local river.



Yellow Fish Campaign – South Devon Area of Outstanding Natural Beauty drain marking.