Portcities is a site all about the worlds ports, this link takes you to the London page.
The River Thames Society site is full of superb facts and detail about the river.
The Thames Barrier is run by the Environment agency and their website will tell you all about it.
Thames 21 are THE people for everyone who wants to help keep the Thames clean.
The Thames Pilot is a unique site with fascinating historical photos and documents about the river.
EcoTales is an environmental arts organisation based in London. We use art, film and storytelling in our work with young people, to raise awareness of environmental issues. Over the next year Stanleytross, our giant plastic Albatross, will tour the UK collecting poems and pictures for our new under 16′s challenge.More information
The Catchment Change Management Hub has a section dedicated to the Tidal Thames Catchment area