River Thames Society's Recent & Current Campaigns

The Society has conducted many campaigns since it came into being in the early 1960s. Recent and current campaigns include support for the Tideway Tunnel , a possible take-over of non-tidal navigation responsibilities by the Canal & River Trust, the listing of the paddle and rymer weirs, Tidy up the Thames, MPs' Parliamentary Group, and the Lock Keepers' Houses.

  Thames Tunnel gets the green light!

Environmental charities and amenity groups representing over 5 million people who had been campaigning for a cleaner Thames in London  welcomed the decision of the government to go ahead with the long awaited and much needed Thames Tideway Tunnel.

Peter Finch, RTS Chairman, says “The Tideway Tunnel will see an end to the scandal of untreated sewage pouring into the Thames, removing a health hazard and restoring the river to a state of which we can all be proud.” 

The Thames Tunnel Now (TTN) coalition comprising national and local organisations - including RSPB, WWF, London Wildlife Trust, Thames21, Angling Trust, River Thames Society and angling and boating groups - had been calling since 2011 for the construction of a new tunnel under the Thames to stop tens of millions of tonnes of sewage overflowing into Londons river each year through the citys 36 Combined Sewer Overflows (CSOs). The result of more than ten years of exhaustive research and development by Thames Water and the Environment Agency, the tunnel proposal has been declared by independent studies as the only viable solution to dealing with "Londons dirty secret whereby as little as 2mm of rain can cause the sewers to overflow directly into the river with devastating effects for fish and other wildlife.

 The project has  now proceeded to the construction phase.  You can see more information at:  www.tideway.london.

Thames Navigation

In 2011 the government announced that the navigation responsibilities of the Environment Agency, including the Thames, would be transferred to the Canal & River Trust,  which would also take over canals from British Waterways.

Since then the River Thames Society has argued that responsibility for navigation on the non-tidal river should remain with the EA and not be transferred into the new waterways charity, as proposed by the government.  The article below drew together all the reasons for maintaining the status quo:



A number of arguments were put forward for the creation of the CRT and, as applied to the Thames, they are:

That waterway users and their local communities will gain a greater involvement in how the waterways are managed.

Our response is that there are already many opportunities for involvement – River User Groups, the Navigation Users' Forum, formal and informal trade and organisation liaison with the EA.

CRT will help waterways be more financially sustainable, with access to new sources of commercial and private income and fund-raising, including legacies and donations.

None of the consultation documents we have seen explain how this applies to the Thames and what these new income streams could be.

 CRT will create an opportunity to grow a strong base of volunteers who can help maintain a range of waterway assets.

There is already much volunteer activity on the Thames – the EA’s volunteer lock-keepers and boat crew, the River Thames Society’s river warden scheme, National Trails volunteers looking after the Thames Path, community involvement in clean-ups, together with a large number of clubs and societies.


The proposal concerns the 136 miles of EA navigation from Cricklade to Teddington, not the tidal 96 miles from Teddington to the outer Estuary, under the jurisdiction of the Port of London Authority.  We are not aware of any intention to replace the PLA by a mutual organisation or charity.

Over the years there have been a succession of management bodies including the Thames Conservancy, Thames Water Authority, National Rivers Authority and, since 1996, the EA.While responsibilities differed they looked after all aspects of river management, not just navigation and the result is the well-regarded and much-used Thames of today.

A CRT take over of navigation responsibilities, while leaving the EA to continue with all its other duties, is a recipe for inefficiency, waste and confusion.

A recent EA employee briefing ( also sent to us ) on the “Future of Navigation Project” refers to  the thousands of assets …each to be identified, its running and replacement costs quantified and its legal status in terms of ownership, operation and any access issues clarified. Where assets have a multi-functional purpose – providing navigation, water resources, flood risk management and biodiversity benefits – the importance of that asset for each function has to be assessed.

Looking at a weir, one such “multi-functional asset” where all the above purposes apply and where lock and weir keepers perform many roles, demonstrates just how difficult and absurd it is to separate navigation from other functions.

The consensus of the organisations we represent is that the EA has done much useful work, addressing a backlog of lock and weir maintenance, providing improved moorings and other facilities. In addition to navigation the EA covers flood and pollution control, land drainage, water abstraction, licensing of river works and fishing, environment protection and promotion of recreation.  All these responsibilities are part and parcel of good river management and together have resulted in our world-renowned river.

Accountability is another concern, as the EA is responsible to the Secretary of State and can be scrutinised by Parliament, but it is not clear what form of public audit will apply to the CRT, particularly during the 15 year transitional funding arrangement when it will receive Government funding.


An issue not mentioned in any briefings is the change under a CRT take over from the current boat registration, for which VAT does not apply, to a licence system where it does. Will CRT absorb the VAT charge or expect Thames licence holders to meet the 20 % increase, leading to a likely loss of boats from the river?

The crucial caveats to navigation transfer are that the CRT’s Trustees should be in agreement and that it is affordable to do so.

In replacing British Waterways the CRT received a settlement of £ 39 million for the first and subsequent 15 years, during which time it will need to find alternative sources of income, while competing with many other charities.

Presumably, CRT will only find the EA waters attractive if the Government grant (assuming there is one) for accepting this liability is equal to the cost of running the EA navigations. If not, they will have less to spend on canals and other waterways, which in effect would be subsidising the Thames, Nene and Great Ouse.

We note that during recent flooding CRT had to make appeals for outside funding to repair canal breaches.

Without in any way being complacent about future EA grant-in-aid from the Government, the EA navigations attract around 2% of its national budget, which means there is scope for budget transfers, particularly in the event of any serious problems, such as the aftermath of recent flooding.


The Minister says he understands our concerns on the future of the Thames and assures us that he will carefully consider all the issues and involve stakeholders during the review period, before deciding its future.

We wish CRT well with its aims and responsibilities but we maintain that it is vital for the non-tidal Thames and the wider river basin to be managed holistically  by one unified body , the Environment Agency.


In early 2018 the EA confirmed that its navigation responsibilities on the Thames and other waterways will not now be transferred to the CRT, but Ministers wish to keep the option open and return to it when the time is right.

This was welcomed by RTS who hope that resources can now be focussed on maintaining and improving the river.

Lock Keepers' Houses


In 2008 the Environment Agency announced on “economic grounds” that lock-keepers’ houses were to be disposed of, either sold or rented, with current occupants required to move. RTS opposed this action, in support of the lock-keepers and their families and because of the effects on safety, good river management and relationships with local communities. The campaign attracted a good deal of support from the public, other river-related organisations and MPs from riparian constituencies, which led to the first All-Party Parliamentary Thames Group. Eventually, EA reduced the number of lock-houses affected but criticism of the policy continued until a few weeks ago ( May 2019)when the EA reported that leases on the remaining rented houses would be terminated with resident lock-keepers restored at Buscot, Goring, Chertsey and Sunbury, as well as Blake’s on the Kennet & Avon at Reading. Also, after an absence of many years, a resident lock-keeper will be moving into a house at Teddington Lock.

Paddle and Rymer Weirs

  A paddle and rymer weir consists of removable upright bars (or rymers) which are slotted into a horizontal base plate fixed to the river bed. These rest against a fixed upper beam which is notched to hold the rymer, in between which are placed removable timber paddles, stacked vertically depending on the depth of water. All are held in place by simple water flow, but are moved in sequence to control the levels.  This technology has been used on the river since the 17th Century and in association with other structures, such as flash locks and pound locks, they provided greater control of river flows and so enabled navigation of the upper reaches of the Thames.

Although periodically rebuilt, the structure at Rushey Lock is the oldest surviving paddle and rymer weir in the country. The River Thames Society successfully campaigned for listing of the weirs at Rushey, Goring and Streatley, to  help to ensure that this important part of our river heritage is not lost.  

Examples of paddle & rymer weirs are also in operation at Northmoor, Iffley, Mapledurham Locks, with  examples lock-side at Molesey and in the car-park of the River & Rowing Museum, Henley.






























































Paddle & rhymer weirs


Paddle & rhymer weirs pic 2