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The Thames Tideway Tunnel Project – “Super Sewer”

London's sewerage system is no longer fit for purpose and spills millions of tonnes of sewage into the tidal section of the Thames River every year. Built in the 19th century when London's population was just two million, the system was designed for four million. Today, the Victorian sewerage network is struggling to serve the city with a population of over eight million people.

After years of study, Tideway proposed the Thames Tideway Tunnel, a new 25 kilometre interception, storage and transfer tunnel running up to 66 metres below the river, which will serve to clean up and reduce sewage overflows into the River Thames. The construction of the new overflow sewer will be carried out across 20 sites at an estimated cost of £4.2 billion and will employ nearly 4,000 people.

The Tideway Tunnel project, nicknamed the "super sewer", will see six, 800 tonne Tunnel Boring Machines (TBM) lowered in to the ground at three main ‘drive sites’, to drill and build the new overflow sewer. 

H.E.S. Sales Limited are proud to be associated as a sub-contractor for one of the biggest infrastructure project undertaken by the UK water industry. We have supplied a number of Hi-Force TWS-N square drive type and TWH-N low profile female hexagon type hydraulic torque wrenches, HTWP hydraulic torque pumps, heavy duty impact sockets and hydraulic torque hoses in the form of a rental agreement, to allow the precise bolt tightening of the impressive Tunnel Boring Machines.

According to tradition, to keep tunnellers safe underground, a female name should be given to the machine before she sets off on her journey. Tideway shortlisted 17 inspirational women from London with links to the local area where their machines would begin tunneling works for the Thames Tideway Tunnel. The final six names voted for were; ‘Selina’ after Selina Fox (1871 – 1958), a pioneering doctor who set up Bermondsey Medical Mission for the poor and disadvantage residents (mainly women and children) in Bermondsey, ‘Rachel’ after Rachel Parsons (1885 – 1956), an engineer and advocate for women's employment rights who set up the first women-only engineering company in Fulham, ‘Charlotte’ after Charlotte Despard (1844 – 1939), a suffragist leader and political activist from Wandsworth, ‘Millicent’ after Dame Millicent Fawcett (1847 – 1929), a feminist, intellectual and political leader who lived in Battersea, ‘Ursula’ after Dr. Audrey ‘Ursula’ Smith (1915 – 1981), a British cryobiologist who discovered the use of glycerol to protect human red blood cells and ‘Annie’ named after Annie Scott Dill Russell (1868 –1947), the first female scientist to work at the Greenwich Observatory.

The main tunnelling work for this project began in 2016 and is estimated to complete by 2021, with system commissioning commencing 2022.

  • Launch of new range of Hi-Force electric driven pumps

    14 July 2021

    H.E.S. Sales is proud to offer the HEP4 range of electric driven pumps.

  • New 1" cordless impact wrenches from Ingersoll Rand

    27 July 2021

    H.E.S. Sales is pleased to offer the new series of cordless impact wrenches.

  • New range of pneumatic impact wrenches

    25 August 2021

    Introducing the IP pneumatic impact wrenches from Hi-Force

  • New electronic torque wrenches from Norbar

    04 October 2021

    H.E.S. Sales is pleased to offer ProTronic® and ProTronic® Plus

  • Addition of new models to the Toughlift range

    07 March 2021

    Hi-Force has added two new 50 tonne models to the existing range of Toughlift jacking systems.

  • New range of hydrotest pumps from Hi-Force

    23 November 2020

    Hi-Force has launched the MHX range, a new series of two stage manually operated hydrotest pumps.

  • HS2 utilises Hi-Force’s synchronised lifting systems

    03 November 2020

    HS2 is Britain’s brand-new high-speed railway calling at over 25 stations.

  • Synchronised lifting systems available for hire

    22 September 2020

    For applications where a precise and synchronous lift & lower is required, H.E.S. offers an economical solution.

  • The new range of fixed speed drive synchronous lifting systems

    22 May 2019

    Hi-Force is pleased to announce the launch of the SLF range of fixed speed drive synchronous lifting systems.

  • The new range of variable speed drive synchronous lifting systems

    22 May 2019

    Hi-Force is pleased to announce the launch of the SLV range of synchronous lifting systems.

  • H.E.S. Sales Limited receives the Gold award from Hi-Force

    06 May 2019

    H.E.S. Sales Limited have been awarded the Gold Revenue Award from Hi-Force.

  • Addition of new models to HAS range of aluminium cylinders

    31 January 2019

    Hi-Force has added six new single acting, solid piston aluminium cylinders to the existing range.

  • Introducing the new failsafe lock ring aluminium cylinders

    31 January 2019

    Hi-Force is pleased to announce the launch of the HFA single acting failsafe lock ring aluminium cylinders.

  • New range of double acting high tonnage aluminium cylinders

    31 January 2019

    Hi-Force is pleased to announce the launch of the HRA double acting high tonnage aluminium cylinders.

  • New Daventry Premises for H.E.S. Sales

    20 March 2017

    H.E.S. Sales has recently relocated to a new facility on the Royal Oak Industrial Estate in Daventry.

  • HES receives Silver award from Hi-Force

    12 March 2017

    H.E.S. Sales is proud to have been awarded the Silver award for highest revenue generator from Hi-Force.

Head Office

2b Daimler Close 
Daventry, Northamptonshire
NN11 8QJ 
England - United Kingdom 

T: 01327 300322

Northern Regional Office

Unit 3, Vantage Park
Sheffield Road, Sheffield
S9 1RQ
England – United Kingdom

T : 01709 362009