Source: https://tendernation.io/suppliers/assystem-energy-and-infrastructure Supplier profile # ASSYSTEM ENERGY & INFRASTRUCTURE LIMITED Public sector contracts won, from published award notices Large business[Companies House 03148098](https://find-and-update.company-information.service.gov.uk/company/03148098) [ Follow competitor](/login "Sign in to follow competitors")[ Compete for this work](/register) Contracts won 13 since 22 Nov 2019 Total awarded £618,700 where values were published Buyers 8 public bodies Latest win 29 Jul 2026 ## Contracts ending soon Contracts ending in the next 18 months. Buyers usually re-tender before the end date, so these are openings for competitors. - [Digital Outcomes and Specialists 7](https://tendernation.io/opportunities/01a13bcc-0c30-7396-af6b-3ef75bf306c4/digital-outcomes-and-specialists-7)[Crown Commercial Service](https://tendernation.io/buyers/crown-commercial-service) Value not counted: framework or estimated ceiling Ends 29 Jul 2027 - [Engineering Design Services Framework](https://tendernation.io/opportunities/01a13ba4-ecaa-7030-95c4-9b0bc3392fa2/engineering-design-services-framework)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) Value not counted: framework or estimated ceiling Ends 31 Mar 2028 ## Recent contract awards - [Open Framework for Nuclear Technical Services](https://tendernation.io/opportunities/01a13bdd-bcf6-726c-8d20-21a4fd9a2ac4/open-framework-for-nuclear-technical-services)[United Kingdom National Nuclear Laboratory Limited](https://tendernation.io/buyers/united-kingdom-national-nuclear-laboratory-limited) Value not published 29 Jul 2026 - [Open Framework for Nuclear Technical Services](https://tendernation.io/opportunities/01a13bdd-bcf6-726c-8d20-21a4fd9a2ac4/open-framework-for-nuclear-technical-services)[United Kingdom National Nuclear Laboratory Limited](https://tendernation.io/buyers/united-kingdom-national-nuclear-laboratory-limited) Value not published 29 Jul 2026 - [G Cloud 15](https://tendernation.io/opportunities/01a13bcc-5c35-73a1-b671-06bd1570bebb/g-cloud-15)[Government Commercial Agency](https://tendernation.io/buyers/government-commercial-agency) Value not counted: framework or estimated ceiling 24 Jul 2026 - [Construction Professional Services 2](https://tendernation.io/opportunities/01a13bcc-d744-71ed-a638-989fc1157198/construction-professional-services-2)[Government Commercial Agency](https://tendernation.io/buyers/government-commercial-agency) Value not counted: framework or estimated ceiling 7 Apr 2026 - [Construction Professional Services 2](https://tendernation.io/opportunities/01a13bcc-d744-71ed-a638-989fc1157198/construction-professional-services-2)[Government Commercial Agency](https://tendernation.io/buyers/government-commercial-agency) Value not counted: framework or estimated ceiling 7 Apr 2026 - [Digital Outcomes and Specialists 7](https://tendernation.io/opportunities/01a13bcc-0c30-7396-af6b-3ef75bf306c4/digital-outcomes-and-specialists-7)[Crown Commercial Service](https://tendernation.io/buyers/crown-commercial-service) Value not counted: framework or estimated ceiling 19 Jan 2026 - [JDR Management Support Framework.](https://tendernation.io/opportunities/01a13bce-4482-7253-a3e6-90a29dffb499/jdr-management-support-framework)[UK Atomic Energy Authority](https://tendernation.io/buyers/uk-atomic-energy-authority) Value not counted: framework or estimated ceiling 15 Jan 2026 - [PLM Change Management](https://tendernation.io/opportunities/01a13bbe-ae6e-7325-9b08-96fb9b7bacb1/plm-change-management)[UK Industrial Fusion Solutions Ltd](https://tendernation.io/buyers/uk-industrial-fusion-solutions-ltd) £447,314 1 Oct 2025 - [Nuclear Energy Regulatory Justification Services Framework](https://tendernation.io/opportunities/01a13bb6-49b0-70d0-8556-3e43583bcbca/nuclear-energy-regulatory-justification-services-framework)[Department of Environment, Food and Rural Affairs](https://tendernation.io/buyers/department-of-environment-food-and-rural-affairs) Value not counted: framework or estimated ceiling 29 Aug 2025 - [Engineering Design Services Framework](https://tendernation.io/opportunities/01a13ba4-ecaa-7030-95c4-9b0bc3392fa2/engineering-design-services-framework)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) Value not counted: framework or estimated ceiling 6 Mar 2024 - [Ecological Consultancy Services](https://tendernation.io/opportunities/01a13cb9-7b49-7195-bb07-df8804285fab/ecological-consultancy-services)[Ashford Borough Council](https://tendernation.io/buyers/ashford-borough-council) £97,815 15 Nov 2023 - [Embedded Support Framework](https://tendernation.io/opportunities/01a13b8c-0dc3-70b0-ada0-31ae3e4f1421/embedded-support-framework)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) Value not counted: framework or estimated ceiling 25 Nov 2021 - [SBRI FIP Challenge Application](https://tendernation.io/opportunities/01a13b89-6deb-73d7-8569-859521c1a302/sbri-fip-challenge-application)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) £73,571 27 Aug 2021 - [UKAEA Engineering Design Services Framework](https://tendernation.io/opportunities/01a13c53-a77d-711b-854b-8691573429ad/ukaea-engineering-design-services-framework)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) Value not counted: framework or estimated ceiling 17 Apr 2020 - [STEP WP5 - Fusion Power Plant - Breeder Blanket Design Challenge](https://tendernation.io/opportunities/01a13c36-f737-724e-814c-ed3d658da09f/step-wp5-fusion-power-plant-breeder-blanket-design-challenge)[United Kingdom Atomic Energy Authority](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) Value not counted: framework or estimated ceiling 22 Nov 2019 ## Companies House StatusActive Incorporated18 Jan 1996 (30 yrs) AccountsFull IndustryInformation technology consultancy activities [View filing history](https://find-and-update.company-information.service.gov.uk/company/03148098)## Who they win from - [United Kingdom Atomic Energy Authority5 wins](https://tendernation.io/buyers/united-kingdom-atomic-energy-authority) - [Government Commercial Agency2 wins](https://tendernation.io/buyers/government-commercial-agency) - [UK Industrial Fusion Solutions Ltd1 win](https://tendernation.io/buyers/uk-industrial-fusion-solutions-ltd) - [Ashford Borough Council1 win](https://tendernation.io/buyers/ashford-borough-council) - [United Kingdom National Nuclear Laboratory Limited1 win](https://tendernation.io/buyers/united-kingdom-national-nuclear-laboratory-limited) - [Crown Commercial Service1 win](https://tendernation.io/buyers/crown-commercial-service) - [UK Atomic Energy Authority1 win](https://tendernation.io/buyers/uk-atomic-energy-authority) - [Department of Environment, Food and Rural Affairs1 win](https://tendernation.io/buyers/department-of-environment-food-and-rural-affairs) ## How fast they pay suppliers 7 days on average 92% of invoices paid within 30 days · 1% after 60 days · 3% not paid within agreed terms [Report for 30 Jun 2026 (GOV.UK)](https://check-payment-practices.service.gov.uk/report/117318)## Bids named on award notices Bid for 3 contracts: won 3, lost 0. Award notices have listed every bidder only since the Procurement Act (February 2025). ## On government frameworks - [Management Consultancy Framework Four (MCF4)](https://tendernation.io/frameworks/RM6309)RM6309 · ends 28 Jul 2027 - [Artificial Intelligence (AI)](https://tendernation.io/frameworks/RM6200)RM6200 · ends 23 Feb 2029 - [Construction Professional Services DPS](https://tendernation.io/frameworks/RM6242)RM6242 · ends 23 Feb 2029 - [Construction Professional Services 2](https://tendernation.io/frameworks/RM6356)RM6356 · ends 16 Apr 2030 ## What they win - [Architecture, engineering & surveying](https://tendernation.io/sectors/architecture-engineering-surveying)7 - [IT services](https://tendernation.io/sectors/it-services)2 - [Business services](https://tendernation.io/sectors/business-services)1 - [Sewage, refuse, cleaning & environmental](https://tendernation.io/sectors/sewage-refuse-cleaning-environmental)1 - [Research & development](https://tendernation.io/sectors/research-development)1 - [Fuels, energy & petroleum products](https://tendernation.io/sectors/fuels-energy)1 Competing with ASSYSTEM ENERGY & INFRASTRUCTURE LIMITED? TenderNation shows who wins each buyer's work, flags contracts coming up for renewal and emails you new tenders that fit. Free plan available. [All buyers](/buyers)[Start free ](/register) 14-day free trial, no card required