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Glenfield Invicta Ltd

From concept to completion, Glenfield Invicta’s end-to-end Project Solutions provide market leading valve and penstock engineering excellence, across a multitude of water utility and non-water utility infrastructure projects.

The company combines the strength and unique proposition of Invicta’s site solutions, penstocks, and environmental expertise, with Glenfield’s experience and expertise in specifying and managing large Dams, Reservoirs and Hydropower projects. Supported by the vast product portfolio from the AVK Group of manufacturing companies.

We are market leaders distinguished by our industry expertise, we have been designing and manufacturing specialist engineered valves and penstocks for more than 170 years. We stand behind every product we install for life, offering some of the best extended warranties in the industry.

Our experienced and multi-skilled project team work closely with our partners and key stakeholders to ensure your project is executed to exacting standards.

Our long history in designing, supplying, and installing highly engineered valves and pipeline equipment in projects is what sets us apart. Our projects are delivered safely, on time, and to the highest standards in arduous applications. This specialist capability has made the our brands synonymous with engineering excellence worldwide.

We have recently invested over £2m in our Kilmarnock facility which extends to over 200,000 sq. ft. of manufacturing, office, warehousing, and education space. It includes a new purpose-built Learning Academy; which will include an interactive visitor centre. We are committed to training the apprentices and engineers of the future.

Gouthwaite Reservoir (2024)

Delivering the successful design and construction of a large diameter emergency drawdown siphon at one of Yorkshire Water’s largest reservoirs

Hamilton WwTW (2024)

Installation of the UK’s first containerised mid-process hydroelectric turbine on a wastewater treatment works

Keadby Terminal Assisted Outfall Pumping Station (2024)

Asset refurbishment to maintain flood resilience, while reducing both the operational carbon footprint and the overall impact of the project upgrade

Llyn y Fan Fach Reservoir (2024)

Grade II listed structure that underwent refurbishment to address safety concerns in the draw-off tower and spillway

Macclesfield WwTW (2024)

Construction of United Utilities first innovative MOB^TM treatment process, to improve the water quality in the River Bollin by December 2024

Beckton STW (2023)

Beckton Sewage Treatment Works (STW) is the United Kingdom’s largest STW serving a population equivalent of over four million. The AMP7 project is a major £185m investment to increase the site’s treatment capacity for growth, by a population equivalent of 200,000, by extending the existing activated sludge plant (ASP). Beckton STW will receive stormwater from […]

Goddards Green WwTW (2023)

Goddards Green Wastewater Treatment Works (WwTW) is a Sludge Treatment Centre (STC) located near Burgess Hill in West Sussex. The catchment serves the towns of Burgess Hill, Hassocks, Hurstpierpoint and surrounding villages, providing for 54,789 people. The project implements an innovative approach to mitigate the likely odour from the processes at the WwTW to prevent […]

Hanningfield WTW - Washwater System (2023)

Located 5 miles south of Chelmsford, Hanningfield Water Treatment Works (WTW) is the largest works operated by Essex & Suffolk Water (ESW). The WTW, which has a peak output of 220 MLD, draws water from the 26,000 ML Hanningfield Reservoir to supply a large part of south Essex. The washwater system is over 50 years […]

King George V Reservoir (2023)

King George V Reservoir (KGV) is an operational raw water storage reservoir located in the Lea Valley at Walthamstow and is a Site of Special Scientific Interest (SSSI) with restricted access. It is controlled by Thames Water’s Lea Valley/North London Abstraction Group based at Coppermills AWTW. Seepage through the clay core at the north-east of […]

Lower Barden Reservoir (2023)

Lower Barden Reservoir is the lower of two reservoirs located near Bolton Abbey within the Yorkshire Dales National Park. The reservoir is an impounding reservoir with a crest length of approximately 640m and a maximum height of 28m with a capacity of 2.23 Mm3. The overflow is located on the right-hand side of the embankment […]

Rivington Upper Impounding Reservoir (2023)

United Utilities and Managed Service Provider (MSP) Costain have delivered improvements to the existing spillway at Rivington Upper Impounding Reservoir in Lancashire. The team worked collaboratively, undertaking a complex construction programme in challenging conditions, while managing the operational needs of the reservoir site and popular recreational area. The main objective was to upgrade the existing […]

Usk Reservoir (2023)

Usk is a large raised reservoir formed by an earth embankment dam, which completed constructed in 1955 with an approximate capacity of 12,268,000m3. The dam is 480m in length, with a maximum height of 31m, and supplies raw water to Bryngwyn Water Treatment Works and as well as providing compensation water to the River Usk, […]

Blackburn and Darwen WwTWs (2022)

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and the bathing waters of the Fylde coast in the Irish Sea. At Blackburn WwTW, which provides treatment for a population equivalent (PE) of approximately 400,000, construction of the […]

Carlisle WwTW (2022)

Carlisle WwTW lies within United Utilities’ north Cumbria region. The site is located to the north-west of Carlisle’s city centre, on the banks of the River Eden, and serves the city of Carlisle. The treatment works receives domestic sewage, trade flows, and tankered imports, providing primary and secondary treatment prior to discharge to the River […]

Dean Clough Lower Impounding Reservoir (2022)

Dean Clough Lower Impounding Reservoir (IR) is a Category A, earth-fill embankment reservoir, located approximately 6km north-east of Blackburn in Lancashire. It is currently used to provide storage for public water supply. It was formed by the construction of an earth embankment across the Dean Brook river and is the lower reservoir in a cascade […]

Ellesmere Port WwTW: Essar Upgrade (2022)

The large industrial town of Ellesmere Port in Cheshire is experiencing population growth, thanks to good transport links and an array of employment opportunities. The local population is set to rise by a further 10% by 2036, to over 76,000, so upgrades to the Ellesmere Port Wastewater Treatment Works (WwTW) are necessary to cope with […]

Hanningfield WTW - Washwater System (2022)

Hanningfield Water Treatment Works (WTW) is the largest water treatment facility operated in the Essex & Suffolk Water supply area. It has been expanded over numerous phases and is currently in need of improvements to its washwater treatment plant in response to changing influent water quality. Hanningfield WTW draws water from Hanningfield Reservoir which is, […]

Keadby Terminal Assisted Outfall Pumping Station (2022)

Keadby Terminal Assisted Outfall (TAO) Pumping Station is at the end of an intricate system of rivers and pumping stations within the low-lying Isle of Axholme catchment in Lincolnshire. It was originally built in the 1940s to discharge water from three parallel channels known as the Three Rivers, into the River Trent during high tides. […]

Riding Mill Raw Water Pumping Station (2022)

When constructed in 1979, as part of the Kielder Transfer Scheme, Riding Mill Pumping Station was the largest pumping station in Britain. Abstracting flows from the River Tyne, it enables Northumbrian Water (NWG) to transfer water from Kielder Reservoir to the Derwent, Wear and Tees rivers, whilst supporting the operation of Mosswood WTW. The site […]

Ynys-y-Fro Lower Reservoir (2022)

The Ynys-y-Fro Reservoir system is situated 1km north-east of High Cross, Newport. The system comprises two reservoirs in cascade: an upper ‘subsiding’ reservoir and a lower ‘old pond’ reservoir. The upper reservoir is immediately upstream of the lower reservoir. The lower reservoir was constructed as an earth embankment dam and was built for the supply […]

Barkers Haugh STW (2021)

Barkers Haugh STW receives wastewater from a population of approximately 36,000 people. Due to a ratcheting of the Environment Agency consent in response to population growth (+4000) and a tighter total iron consent of 4mg/l an upgrade of the works was required. A total of £8m was invested to improve the quality of the effluent […]

Blackburn and Darwen WwTWs (2021)

Blackburn WwTW was constructed in the 1960s and principally treats domestic crude sewage from the Blackburn catchment, with two major additional contributions; a high strength trade effluent from the InBev brewery and an ammonia rich return liquor flow from the sludge treatment plant. The key river water quality/water framework directive parameters within the revised environmental […]

Cownwy & Marchnant WFD Project (2021)

The River Marchnant and River Cownwy lie within the valley of Lake Vyrnwy, Powys. The purpose of this project is to provide environmental flow releases below the Cownwy and Marchnant diversion intakes that supply Vyrnwy Reservoir. The scheme will amend the existing structures to enable a 25/75% proportional flow split, including a Q99 hands-off flow. […]

Hawkhurst South WwTW (2021)

The NEP Quality drivers for the Southern Water’s Hawkhurst South WTW are to meet the new iron and total phosphorus discharge permit limits by 31/12/2021, a tightened ammonia permit by 31/03/2025, and to maintain compliance with all aspects of the current discharge permit at lowest whole life cost. In addition, the population equivalent is set […]

West Huntspill WRC Bathing Waters Improvements (2021)

West Huntspill Water Recycling Centre (WRC) is a Wessex Water facility situated south of Highbridge in West Somerset. This environmentally sensitive site is within a National Nature Reserve and adjacent to a Site of Special Scientific Interest and a Special Protection Area (Bridgewater Bay and the Severn Estuary). The facility serves a catchment of 62,000 […]

Blackburn and Darwen WwTWs (2020)

Blackburn WwTW, located at Samlesbury near Blackburn, serves a population equivalent (PE) of approximately 400,000 and discharges final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble estuary and ultimately into the bathing waters of the Fylde coast in the Irish Sea. Over the last 12 months, […]

Blackmoorfoot Reservoir (2020)

Blackmoorfoot Reservoir, a storage reservoir situated south-west of Huddersfield in West Yorkshire, was constructed between 1871 and 1876 at a cost of £260,000. It has a capacity of over 700,000 gallons and covers an area of 102 acres and provides raw water to Blackmoorfoot WTW, which supplies treated water to Huddersfield and surrounding areas. The […]

Bray Keleher WTW (2020)

The Bray Keleher Water Treatment Works (WTW) abstracts and treats a maximum of 45 Ml/d of river Thames water and is located on Monkey Island Lane, Bray, between Windsor and Maidenhead. The works is of strategic importance in maintaining supplies to the western region of South East Water (SEW). As part of the final determination […]

BRP - Treated Water Project - Birmingham Resilience Project (2020)

Raw water has been collected in reservoirs in the Elan Valley in Wales and transferred 118km under gravity through an aqueduct to the water treatment works (WTW) in Birmingham for treatment and distribution to the city’s residents and industries since the beginning of the 20th century. The original infrastructure was constructed over 100 years ago, […]

Church Wilne WTW (2020)

Situated on the Derbyshire/Nottinghamshire border, Church Wilne WTW serves 600,000 Severn Trent (ST) customers in the East Midlands. Built in 1967 to extract and treat 27 ML/day from the River Derwent, the works has been extended twice to 135 ML/day meeting the needs of both a growing population and increased water quality standards. However, the […]

Ellesmere Port WwTW: Essar Upgrade (2020)

The large, industrial town of Ellesmere Port in Cheshire is experiencing population growth, thanks to excellent transport links and an array of employment opportunities. The local population is set to rise by a further 10% by 2036, to over 76,000, so upgrades to the Ellesmere Port WwTW are necessary to cope with increased throughput. The […]

Langsett WTW (2020)

Yorkshire Water’s Langsett Water Treatment Works (WTW) is located 17km north-west of Sheffield in South Yorkshire, on the edge of the Peak District National Park. The WTW treats raw water which is extracted by gravity from two upland impounding reservoirs at Langsett (adjacent to the WTW) and nearby Midhope (approximately 1km south-east of the site). […]

Llyn Brenig Reservoir (2020)

Llyn Brenig impounding reservoir is located in the Denbigh Moors in North Wales. It was constructed in 1975 and was officially opened by the Prince of Wales. It forms part of the River Dee regulation to manage flow into the Dee via the Afon Alwen. The reservoir has a capacity of around 60 million cubic […]

Morecambe WwTW Catchment Strategy: Part 3 (2020)

Operated by United Utilities, the Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both […]

Oldham & Royton Integrated Strategy (ORIS) (2020)

United Utilities is the regional water company for the North West of England, delivering water and wastewater services to 7m people from Cheshire to the Scottish border. Oldham WwTW and Royton WwTW are two major wastewater treatment works located in Oldham, to the north east of Manchester. The Oldham and Royton Integrated Strategy (ORIS) project […]

Anchorsholme Outfall Pumping Station (2019)

Anchorsholme Park is located on the coast 4 miles north of Blackpool Tower. The outfall pumping station project is the second of three phases contributing to improving bathing waters on the Fylde coast. The objective of the overall scheme is to complete the AMP5 obligations on the Fylde Coast of the ‘moving towards three spills […]

Blackburn and Darwen WwTWs (2019)

Both Blackburn WwTW and Darwen WwTW discharge final and storm effluent to watercourses that are tributaries of the River Darwen, feeding into the River Ribble and ultimately impacting on the bathing waters of the Fylde coast. Following on from the Blackburn and Darwen WwTWs (2017) article and Blackburn and Darwen WwTWs (2018) article, both published […]

BRP - Treated Water Project - Birmingham Resilience Project (2019)

Since the beginning of the 20th century, raw water has been conveyed 118km from the Elan Valley in Wales, under gravity by aqueduct, to the water treatment works (WTW) in Birmingham for treatment and supply to the population of the city. The aqueduct has been in continuous service for over 100 years and requires some […]

Medlock Quality Programme (2019)

Medlock Quality Programme is part of United Utilities AMP6 investment programme across the North West and is the third Nereda® Reactor Plant to be operated by United Utilities. The scheme can be split into two distinct areas: (i) the upgrade of Failsworth WwTW to meet the new discharge consent and reduce the volumes of spills […]

Morecambe WwTW Catchment Strategy: Part 2 (2019)

United Utilities’ Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both sites have sea […]

Otterbourne WTW (2019)

Otterbourne WSW is a critical site, located between Southampton and Winchester, supplying water to the surrounding area to a total of around 250,000 homes. Otterbourne was originally constructed in 1939, with extensions to the works being constructed in 1949 and 1958. The works treats borehole and river water which supply two independent treatment streams. The […]

Stocksbridge WwTW (2019)

Stocksbridge WwTW is located in the village of Deepcar on the outskirts of Stocksbridge, approximately 7km northwest of Sheffield city centre. It currently serves a population of 13,000, but this is expected to grow towards 15,000 by 2030. Major housing development is ongoing near the existing works, and as part of this Yorkshire Water reached […]

Morecambe WwTW Catchment Strategy: Part 1 (2018)

The Morecambe sewerage system collects at Schola Green Wastewater Pumping Station (WwPS) located in the west end of the town. From there, flows for treatment are pumped via a 6km long pipeline to Morecambe Wastewater Treatment Works (WwTW), which is situated to the south, near to the village of Middleton. Both sites have outfall pipelines […]

Preston WwTW (2018)

Preston WwTW serves a population in excess of 250,000 and has six sub-catchments: Lytham, Fairhaven and Freckleton within the Fylde District to the west, Lea Gate and Watery Lane to the east within the Borough of Preston and Penwortham to the southwest within the South Ribble District. United Utilities (UU) has invested £20m during AMP6 […]

Prioress Mill Raw Water Pumping Station (2018)

Prioress Mill Raw Water Pumping station (RWPS) is located in Rhadyr, near Llancayo, Monmouthshire, on the south bank of the River Usk. It abstracts at a rate of up to 318 ML/day, and is the primary supply to Llandegfedd reservoir, which then feeds Sluvad Water Treatment Works (WTW). Prioress Mill RWPS has been identified by […]

Affinity Water Pesticide Removal (2017)

Affinity Water’s largest water treatment works (WTW) is being upgraded as part of their AMP6 business plan to ensure they continue to provide a robust treatment solution for the removal of pesticides from water abstracted from the River Thames. The scope of the works is to increase the granular activated carbon empty bed contact time […]

Farlington WTW (2017)

Portsmouth Water’s Farlington WTW dates back to 1909 and provides potable water to more than 280,000 people and many businesses in the Portsmouth and Havant area. Farlington’s supply is derived from the springs, which are believed to be the largest spring source in Europe. In April 2015 Portsmouth Water issued a tender based on an […]

Beckton STW (2016)

In May 2015 Thames Water Operations identified emergency works on Activated Sludge Plant (ASP) 2 at Beckton STW in east London. The work was necessary to address the asset health and resilience of the treatment works, meet performance commitments and ensure satisfactory sludge disposal. The project was a fast track design and implementation with early […]

Farlington WTW (2016)

Portsmouth Water’s Farlington WTW dates back to 1909 and provides potable water to more than 280,000 people and many businesses in the Portsmouth and Havant area. Farlington’s supply is derived from the springs, which are believed to be the largest spring source in Europe. Raw water is chlorinated at the spring source pumping stations. At […]

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