Become a supplier

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Who we are

Our Commercial function is made up of our Commercial Business Partners, Buying Team, Strategic Sourcing (including our external partner Efficio), Procure to Pay, Contract Management and Commercial Assurance.

Together we aim to deliver our Commercial Goals: striving for upper quartile performance through the supply chain, leading the business in developing commercial focus, delivering sustainable value in our commercial arrangements and creating strong partnerships with our colleagues and suppliers.

A sustainable approach to procurement

We believe conducting our procurement activities in a sustainable and ethical manner can help to reduce risks in our supply chain, as well as create opportunities to address wider social, economic, and environmental challenges facing the water sector.

We want to work and collaborate with suppliers that share our sustainability aspirations. As such, sustainability considerations now form an increasingly important part of our procurement decision-making.

Our Sustainable Procurement Code outlines our areas of focus on sustainability-related issues and details the expectations and requirements on our suppliers and contractors when undertaking work on our behalf.

Best practice

We manage our business compliance, risk and value by ensuring sustainable and innovative solutions are delivered through established and transparent procurement practices.

We engage and consult business stakeholders and industry expertise to deliver the right sourcing strategy with the right suppliers through robust, competitive and commercial arrangements.

In order to achieve best value for our customers, we follow robust tendering processes that are fair and transparent to all bidders. The qualification process to test supplier capacity and capability ensures our selected partners operate safely, as well as possess and can maintain strong financial, commercial, sustaianble and technical credentials. 

Yorkshire Water comply with the Utilities Contracts Regulations and the European Communities Official Journal.

We publish opportunities to our suppliers via the Utilities Vendor Database operated by Achilles Information Ltd and on Find a Tender Service operated by the government.


SAP Ariba is the largest business-to-business network in the world, trading with partners from more than 3.6 million businesses and operating in more than 190 countries. This electronic platform has been active to global businesses of all sizes since 1996, and in 2012, Ariba was acquired by SAP, the world’s largest business software company.

Our new system and business processes are designed to improve and streamline our Sourcing, Contract Management, Purchasing, and Accounts Payable processes.

We will use SAP Ariba to facilitate sourcing events, send electronic purchase orders and receive electronic invoices. This new technology will provide benefits to all:

  • Greater control over order processing and the ability to easily create electronic invoices
    Increased (real-time) visibility of orders and the status of invoices.
  • Improved (real-time) visibility of payments with no risk of invoice being lost.
  • Greater spend compliance through the use of online catalogues.
  • Potential new business opportunities through visibility to other buying organisations on the Ariba Network.
  • Simple set-up, all you need is an internet connection.
  • Free for suppliers to use/transact if using a Standard Account.

We have now launched our new Supplier Information Portal.

This page will give our suppliers all the information they need to allow them to conduct business with Yorkshire Water Services Limited, including quick access to:

  • Training Guides/Videos
  • Policies
  • Key Contact Information
  • Frequently Asked Questions

Contact us

If you need training or support on the Ariba system, please contact

For all accounts payable invoice and payment queries, please contact

The fastest way to get your invoices through to us is via PO flip in Ariba, if you are unable to do so, manual invoices need to be submitted as PDF to ensuring the invoice number is on the subject line of the email. Please note we can only accept invoices via one route in.

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