Assystem Energy & Infrastructure Limited

Assystem Energy & Infrastructure Limited (Companies House no. 03148098) appears as the supplier on 11 public contracts in our data, worth £23.9m as published. 1 of them end between 8 Jan 2027 and 8 Apr 2028.

View on Companies House · Self-declared size on notices: LARGE

Buyers

United Kingdom Atomic Energy Authority (9)Ashford Borough Council (1)UK Industrial Fusion Solutions Ltd (1)

Contracts ending in the radar window

Contract	Buyer	Incumbent supplier(s)	Value	Ends	Region
Engineering Design Services Framework framework · 9 suppliers Contracts Finder · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +6 more	£9.9m	31 Mar 2028 re-tender likely from ~30 Sep 2027	South East

All contracts

Contract	Buyer	Incumbent supplier(s)	Value	Ends	Region
Ecological Consultancy Services Contracts Finder · CPV 71000000	Ashford Borough Council	Assystem Energy & Infrastructure Limited	£98k	15 Nov 2029 re-tender likely from ~15 May 2029	South East
Engineering Design Services Framework framework · 9 suppliers Contracts Finder · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +6 more	£9.9m	31 Mar 2028 re-tender likely from ~30 Sep 2027	South East
PLM Change Management Find a Tender · CPV 79410000	UK Industrial Fusion Solutions Ltd	Assystem Energy & Infrastructure Limited	£298k	29 Jul 2026 re-tender may already be under way	UK-wide
Embedded Support Framework framework · 7 suppliers Contracts Finder · CPV 71336000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, Atkins Limited, Engineering Analysis Services Limite +4 more	£4.0m	1 Dec 2025 re-tender may already be under way	South East
Embedded Support Framework framework · 7 suppliers Find a Tender · CPV 71336000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, Atkins Limited, Engineering Analysis Services Limited +4 more	£571k	end date not published	South East
Engineering Design Services Framework- Mechanical Engineering framework · 7 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRéalis UK Limited, DEMCON high-tech systems Delft B.V. +4 more	£1.5m	end date not published	UK-wide
Engineering Design Services Framework- Systems Engineering framework · 6 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +3 more	£1.5m	end date not published	UK-wide
Engineering Design Services Framework- Computer Based Modelling & Simulation framework · 5 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +2 more	£1.5m	end date not published	UK-wide
Engineering Design Services Framework- Process Engineering framework · 5 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, Frazer-Nash Consultancy Ltd. +2 more	£1.5m	end date not published	UK-wide
Engineering Design Services Framework- EC&I framework · 6 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +3 more	£1.5m	end date not published	UK-wide
Engineering Design Services Framework- Specialist Nuclear Services framework · 6 suppliers Find a Tender · CPV 71320000	United Kingdom Atomic Energy Authority	Assystem Energy & Infrastructure Limited, AtkinsRealis UK Ltd, DEMCON high-tech systems Delft B.V. +3 more	£1.5m	end date not published	UK-wide

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Contains public sector information licensed under the Open Government Licence v3.0. Data from Find a Tender and Contracts Finder; updated every 2 hours. Where a notice doesn't publish a contract end date we show "end date not published" - we never guess.