Don’t just take our word for it, Asset Investment Manager is used by some of the largest asset owners in the world.

Thames Water

Thames Water is the UK’s largest water and wastewater service company. It supplies 9 million water and 14 million wastewater customers across London and the Thames Valley. It manages 32,000 km of water mains, 108,000 km of sewers, 100 water treatment works and 350 sewage treatment works.

Thames Water is Probit’s first client and is using AIM for water main and sewer assets to quantify the investment required to achieve levels of service for customers. This feeds into their next five-year planning cycle, in which proposals are submitted to their regulator, Ofwat, to determine the investment companies can make and future bill limits for customers. Asset Investment Manager has also been used for water resource management planning to identify how Thames Water will maintain water supplies over a 25 year period.

South West Water

South West Water provides water and sewerage services in Devon, Cornwall, and parts of Dorset and Somerset. 1.7 million residents and 8 million tourists rely on them to deliver a safe and clean water supply and keep the region’s beaches and sewerage systems wastewater stringent UK and European Union standards. Their assets include 29 water treatment works, 645 wastewater treatment works, 1,001 combined sewer overflows, 1,111 water and sewage pumping stations, 15,000 km of water mains and 14,000 km of sewers.

South West Water is utilising AIM for their extensive above ground assets (water treatment works, pumping stations etc.) to inform the level of investment required to maintain and improve water quality, minimise and prevent taste, odour and discolouration and ensure waste water leaving treatment works is no threat to the environment.

National Grid

National Grid is one of the world’s largest investor-owned utility companies, focused on transmission activities in electricity and gas. They play a vital role in connecting millions of people to the energy they use – safely, reliably and efficiently. Within the UK, National Grid owns the electricity transmission system in England and Wales (NETS) and the gas transmission system in Great Britain (NTS). The NETS consists of approximately 7,200 kilometers (4,474 miles) of overhead line, 1,500 kilometers (932 miles) of underground cable and 342 substations. The NTS is made up of approximately 7,660 kilometers (4,760 miles) of high-pressure pipe and 618 above-ground installations.

Following an international tender process, National Grid selected AIM as their preferred Asset Investment Planning tool in 2017.

Dŵr Cymru/Welsh Water

Welsh Water Logo

Welsh Water is the sixth largest water and sewerage company in England and Wales. It is responsible for providing over three million people with drinking water and wastewater services across Wales and some adjoining areas of England. It operates 27,000 km of water mains, 19,000 km of sewers, 105 water treatment works, 832 wastewater treatment works, 81 reservoirs, 715 service reservoirs, 532 pumping stations, 1,700 sewage pumping stations and 3,300 combined sewer overflows.

Welsh Water is using AIM across all assets to inform the level of investment required to maintain and upgrade the large network of assets to ensure a safe and reliable drinking water supply and to deal effectively with wastewater so as to protect the environment.



Cadent, formerly National Grid Gas Distribution Ltd, is the largest regulated distributor of gas in the UK. It owns four of the eight regulated gas distribution networks, over 131,000 kilometers of lower-pressure gas distribution mains, serving 10.8 million homes and businesses.

Gas accounts for 66 percent of the UK’s non-transport final energy consumption and is a critical component of the UK energy infrastructure. With a total regulated asset value of £9 billion as of March 2017, Cadent accounts for almost half of the industry’s asset base. They are the second largest energy network operator in the UK, behind National Grid Electricity Transmission, and all their revenues are regulated under the RIIO GD1 price control framework monitored by Ofgem.

Wales West Utilities

Wales West Utilities

Wales & West Utilities is the gas emergency and pipeline service for Wales and the south west of England, helping to keep 7.5m people safe and warm with a gas supply they can rely on and a level of service they can trust.

They are currently working on a multi-million pound, 30-year gas pipe investment programme which began in 2002. Old metal pipes within 30 meters of buildings are being upgraded to new long-lasting plastic pipes with a lifespan of more than 80 years, to make sure homes and businesses continue to receive a safe and reliable gas supply now and in the future.

Wales & West Utilities were the first gas distribution network to adopt a risk and service-based asset investment planning methodology and chose AIM to help achieve this.