Major projects authority MPA
Note: As of 1st January 2016 this unit was merged with Infrastructure UK to become the Infrastructure and Projects Authority.
Contents |
[edit] Introduction
The Major Projects Authority was part of the Cabinet Office's Efficiency and Reform Group (ERG) and replaced the Office of Government Commerce's (OGC) Major Projects Directorate.
The Major Projects Authority was established by the government to '...bring about the successful delivery of major projects across central Government by working with departments to ensure the fitness and quality of major projects throughout their life' (ref HM Treasury, Major project approval and assurance guidance).
A project is defined as a 'major project' if it meets any of the following criteria:
- It requires HM Treasury approval.
- It could lead to a breach in departmental expenditure limits.
- It involves significant levels of unplanned spending.
- It could set an expensive precedent.
At the end of 2015, when it merged with Infrastructure UK to become the Infrastructure and Projects Authority, there were approximately 200 major projects running.
[edit] Major projects procedures
Procedures set out by the Major Projects Authority are mandatory for all major projects. They focus on a series of reviews and approvals at key stages in the development of a project.
An Integrated Assurance and Approval Plan (IAAP) is prepared for a major project, setting out the review and approval process that will be adopted.
Projects will generally be reviewed at the following stages:
- Starting gate review. A starting gate review is commissioned by submitting a Risk Potential Assessment (RPA) to the Major Projects Authority.
- Strategic outline case, before any public commitments are made (this may be preceded by OGC gateway review 1 or some other project assessment review (PAR)).
- Outline business case, before OJEU notices are placed (this may be preceded by OGC gateway review 2 or some other project assessment review (PAR)).
- Full business case, before contracts are finalised (this may be preceded by OGC gateway review 3 or some other project assessment review).
- Further project assessment reviews depending on the nature of the specific project. These may follow OGC gateway reviews.
- Consequential reviews for projects that are in difficulty.
The forum for approving major projects at agreed milestones may be either a:
- Major Projects Review Group (MPRG).
- Treasury Approval Point with panel meeting.
- Treasury Approval Point without panel meeting.
The Major Projects Review Group consists of government and private sector experts, from which a panel of three or four individuals are selected to review projects that meets any of the following criteria:
- The whole life costs are over £1bn.
- They are high risk and complex.
- They set a precedent.
- They are highly innovative.
- They are 'of concern'.
Panel meetings are informed by an 'assessment team report' and a 'project and department briefing paper' produced by an assessment team as a result of a project assessment review.
The panel chair will make a recommendation to either:
Generally, the Treasury Approval Point process reviews projects outside the departmental delegated authority but below the level required for Major Projects Review Group scrutiny (usually £1bn).
[edit] Related articles on Designing Buildings
- BIM Task Group.
- Common Minimum Standards.
- Departmental Expenditure Limits DELs.
- Efficiency and Reform Group.
- Government Construction Strategy.
- Infrastructure and Projects Authority.
- Infrastructure UK.
- Infrastructure Exports: UK (IE:UK).
- International Infrastructure Support System (IISS).
- Major development.
- Major project construction contract.
- Nationally Significant Infrastructure Project initiatives reach milestone.
- Nationally significant infrastructure projects.
- OGC.
- OGC Gateway Review process.
- OJEU.
- Public procurement.
- The Green Book.
- Whole life costs.
[edit] External references.
- Major Projects Authority, Assurance Toolkit.
- HM Treasury, Major project approval and assurance guidance.
- Cabinet Office,Integrated Assurance and approvals, Lifespan of a Major Project on the Government Major Projects Portfolio.
- Cabinet Office, MPA Integrated Assurance Toolkit for Major Projects.
- Cabinet Office,Starting Gate Guidance
- Cabinet Office, Risk Potential Assessment Form
- Cabinet Office, A Guide to Planning Integrated Assurance and Approvals
- HM Treasury, Green Book. A framework for the appraisal and evaluation of all policies, programmes and projects.
Featured articles and news
The Architectural Technology podcast: Where it's AT
Catch up for free, subscribe and share with your network.
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.



























