Derwent MacDee (DM)

Derwent MacDee (stylised as DM, later just MacDee) are a manufacturer of toilet cisterns, owned by Wirquin, who also own Celmac, the toilet seat manufacturers. DM came around in the mid 1980s when Fordham rebranded. They made a range of cisterns, such as the Elan, Buccaneer, Sprite and Flushpanel.

The original logo was "dm" in gold with a black square behind it. In rougly 1990, they changed their logo to the same "dm", but in white, with a white circular back instead. Then in 2007/8, the logo was changed again, this time to "MacDee", and the white circular back. Around the time of the 1990 logo change, DM discontinued the Sprite, Flushpanel and Buccaneer, and brought out some new cisterns, such as the Consort, Rhino, Compact and Concord. To this day, these are still made, along with the Elan, the only remaining cistern from the Fordham days.