Source: https://tendernation.io/glossary/incumbent-supplier Glossary # Incumbent supplier The supplier currently delivering a contract, usually bidding to keep it when the buyer runs a new procurement. Updated 14 Oct 2026 The incumbent is the supplier that currently holds a contract. When the buyer runs a new procurement for the same work, the incumbent usually bids to keep it, and other suppliers are competing to replace them. ## What it means Incumbents tend to have real advantages: they know the buyer's people, the actual workload and the problems that never make it into a specification. The Procurement Act 2023 does not ban that advantage, but it limits how far it can tilt a competition: - [Section 12(2) and (3)](https://www.legislation.gov.uk/ukpga/2023/54/section/12) require buyers to treat suppliers the same unless a difference justifies different treatment, and to take reasonable steps so that any different treatment does not put a supplier at an unfair advantage or disadvantage. - [Section 16(3)](https://www.legislation.gov.uk/ukpga/2023/54/section/16) requires buyers running [preliminary market engagement](/glossary/preliminary-market-engagement) to make sure participating suppliers are not put at an unfair advantage and competition is not otherwise distorted. The Act also makes incumbent performance more visible. For contracts worth more than £5 million, [section 52](https://www.legislation.gov.uk/ukpga/2023/54/section/52) generally requires at least three key performance indicators, and [section 71](https://www.legislation.gov.uk/ukpga/2023/54/section/71) requires the buyer to assess and publish performance against them at least once every 12 months. ## Why it matters for SMEs Many SME bids are against an incumbent. Some buyers are happy with the current supplier; others want a change but need a credible, low-risk alternative. Your job is to be that alternative, without criticising a supplier the evaluators may have worked with for years. ## Practical tip Before bidding, research the incumbent: how long they have held the contract, any published performance information and the buyer's comments in market engagement. Use [clarification questions](/glossary/clarification-questions) to ask for data the incumbent already knows, such as volumes or staff numbers. Then make your mobilisation plan concrete, because the biggest worry about switching is disruption. The [who won it](/tools/who-won-it) tool shows who holds contracts in your sector. Find tenders that fit your business Search UK, EU and World Bank tenders in one place, get AI summaries and a fit score for each one, and track bids in a pipeline. Professional comes with a 14-day free trial, no card needed. [Browse live tenders](/opportunities)[Start free trial ](/register) 14-day free trial, no card required Browse by sector - [Construction work](https://tendernation.io/sectors/construction-work)6891 - [Architecture, engineering & surveying](https://tendernation.io/sectors/architecture-engineering-surveying)3955 - [IT services](https://tendernation.io/sectors/it-services)1724 - [Business services](https://tendernation.io/sectors/business-services)2428 - [Health and social work](https://tendernation.io/sectors/health-social-work)1047 - [Sewage, refuse, cleaning & environmental](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental)3336 [All sectors ](/sectors) ## Nearby terms - [EExclusion grounds and the debarment listThe legal reasons a supplier can or must be barred from public contracts, and the central list of suppliers that Ministers have debarred.](https://tendernation.io/glossary/exclusion-grounds-debarment-list) - [FFind a TenderThe UK government's procurement notice service, which hosts the Central Digital Platform for notices and supplier registration under the Procurement Act 2023.](https://tendernation.io/glossary/find-a-tender) - [FFrameworkAn agreement between a buyer and one or more suppliers that sets the terms for awarding future contracts, without committing to any spend.](https://tendernation.io/glossary/framework) - [LLight touch contractA contract mainly for certain social, health, education and other people-focused services, which follows a more flexible set of procurement rules.](https://tendernation.io/glossary/light-touch-contract) - [LLotsSeparate parts of a procurement, divided by type of work or geography, that suppliers can bid for individually.](https://tendernation.io/glossary/lots) - [MMEAT (most economically advantageous tender)The legacy test for choosing a winning bid under the Public Contracts Regulations 2015, replaced by the most advantageous tender under the 2023 Act.](https://tendernation.io/glossary/meat) [Read our procurement guides ](/guides)