The Sourcing Playbook: the 11 key policies for public service delivery, explained

The key facts

• Version 4 of the Sourcing Playbook was published in June 2023, updating the original 2019 Outsourcing Playbook, which was rebranded in version 2 in June 2020.
• It sets out 11 key policies for getting sourcing projects right at the start, whether outsourcing, insourcing or using a mixed economy of both.
• Central government departments and arms length bodies shall always apply it; shall denotes a mandatory requirement on a comply or explain basis, while should denotes a recommendation.
• Complex outsourcing means first generation outsourcing, significant transformation, markets with limited competition or where government is the only customer, or novel and contentious services, and it triggers extra requirements including a Project Validation Review, a Should Cost Model and a pilot.
• Central government pipelines must cover at least 18 months, ideally three to five years, and be updated at least every 6 months.
• Three KPIs from each of the government's most important contracts shall be made publicly available.
• Projects over £20 million total value attract additional Cabinet Office controls, and suppliers can raise concerns through the Public Procurement Review Service.
• Version 4 added refreshed content on TUPE, embedding policies in frameworks and call-offs, accessibility for local government, pipelines and bid delays, the Supplier Code of Conduct, financial viability assessments and handling inflation including contract indexation.

What the Sourcing Playbook is and who must follow it

The Sourcing Playbook is the government's guidance on service delivery decisions: outsourcing, insourcing, mixed economy sourcing and contracting. Version 4, published in June 2023, continues the approach begun with the Outsourcing Playbook in 2019 and rebranded as the Sourcing Playbook in June 2020. Its purpose is to help commercial, finance, project delivery, policy and legal professionals avoid the most common errors observed in sourcing services and get more projects right from the start.

Central government departments and their arms length bodies shall always apply the Playbook when sourcing or contracting for services. The language is precise: shall denotes a mandatory requirement implemented on a comply or explain basis, while should denotes a recommendation. All other public sector contracting authorities should consider the Playbook and apply judgement based on the scale, complexity, novelty and risk of their procurements. Frameworks and dynamic purchasing systems for outsourced services are in scope, and related playbooks cover adjacent territory: the Construction Playbook for public works, the Consultancy Playbook for consultancy and the DDaT Playbook for digital services. Compliance in central government is assured through departmental governance and Cabinet Office controls for projects over £20 million, and the Public Procurement Review Service gives suppliers a route to raise concerns anonymously.

The 11 key policies

The Playbook is organised around 11 key policies applied across the commercial lifecycle. In preparation and planning: all central government departments shall publish commercial pipelines so suppliers can see future demand; all potential outsourcing projects shall assess the health and capability of the market early; all complex outsourcing projects shall go through a Project Validation Review, the policy to delivery gateway previously reserved for major projects; departments should conduct a proportional delivery model assessment, previously known as make versus buy, before deciding to outsource, insource or re-procure, and these are mandatory in certain scenarios; and all complex outsourcing projects in central government shall produce a Should Cost Model Estimate to understand whole life costs and protect against low cost bid bias.

Continuing through the lifecycle: where a service is outsourced for the first time, a pilot should be run as part of a programme of testing; all new projects should include KPIs relevant and proportionate to the contract, with three KPIs from the government's most important contracts made publicly available; risk allocation proposals shall be scrutinised to ensure they are informed by genuine and meaningful market engagement, because inappropriate risk transfer has been a perennial supplier concern; pricing and payment mechanisms should be designed hand in hand with risk allocation to incentivise the desired behaviours and outcomes; all outsourcing projects should apply a minimum standard when assessing the economic and financial standing of suppliers; and suppliers of critical public service contracts shall be contractually obliged to provide resolution planning information so government is prepared for insolvency risks to critical services. Public sector dependent suppliers, groups with over £50 million annual revenue of which more than half comes from public sector work, may also be required to provide it.

Preparation and planning: pipelines, markets and early engagement

The Playbook devotes most attention to the earliest stages, where projects are won or lost. Published pipelines should look ahead three to five years to be truly effective, with a minimum of 18 months for central government, updated at least every 6 months. Pipelines matter most to SMEs and voluntary, community and social enterprise organisations with fewer bidding resources, and they give all suppliers the confidence to invest in innovation, apprenticeships and supply chain relationships ahead of demand. Insufficient time for commercial activity is a failure indicator repeatedly flagged by the National Audit Office.

Market management means looking beyond individual contracts to design commercial strategies that keep markets healthy over time. First generation outsourcing can shape a market permanently, so models should promote competition and contestability, and where weaknesses appear, actions such as contract disaggregation should be considered. Early engagement is encouraged without embarrassment: talking to the market tests deliverability, feasibility and appetite for innovation, and the proposed approach to inflation should be clearly articulated because it directly affects risk allocation and pricing. All preliminary market consultation shall observe the principles of public procurement so no supplier gains preferential advantage, with open announcement through a Prior Information Notice good practice. Social value runs through all of it: the public sector shall maximise social value through procurement and account for it in evaluation, using the Social Value Model themes spanning COVID-19 recovery, tackling economic inequality, fighting climate change, equal opportunity and wellbeing.

Scope, complexity and the approval gateway

The Playbook distinguishes requirements for all sourcing projects from the additional demands on complex outsourcing. Every project should appear in a published pipeline, complete a market health and capability assessment, engage early with the market and end users, maintain quality data, write clear technical specifications, design proportionate KPIs, allocate risk to the party best able to manage it, adopt complementary pricing mechanisms, assess financial standing, follow resolution planning guidance and plan early for contract end. Complex outsourcing projects additionally go through a Project Validation Review, include embedded support from the Cabinet Office Complex Transactions Team or equivalent, produce a Should Cost Model Estimate, run a pilot before full procurement, consider dialogue and negotiation procedures, and apply low cost bid bias criteria.

The Project Validation Review sits at the transition from policy to delivery: it shall occur early in preparation and planning, before any public commitment is made, bringing independent peer review and cross-functional expertise to bear on deliverability, affordability and value for money. The Playbook also emphasises that sourcing is not a purely commercial enterprise: several policies are expected to be led by non-commercial professionals, with joined-up teams across commercial, finance, project delivery and policy from day one.

What version 4 changed and the procurement reform context

Version 4 responded to consultation with industry and contracting authorities by refreshing content on TUPE, embedding Playbook policies in frameworks and guidance for call-offs, making the Playbook more accessible to local government and the wider public sector, pipelines and the impact of bid delays, a refreshed Supplier Code of Conduct, financial viability assessments, and dealing with inflation including contract indexation. The persistent theme is trust: both suppliers and departments are encouraged to highlight where either party falls short of the Supplier Code of Conduct or the Playbook.

The Playbook was written while the Procurement Bill was before Parliament and flags the changes then expected, including expanded pipeline notices for authorities spending over £100 million a year (covering contracts over £2 million, published within 56 days of the financial year start), preliminary market engagement notices, tender notices, transparency notices for direct awards, assessment summaries for bidders, award notices with an 8 working day standstill, contract change notices and contract details notices. That legislation has since become the Procurement Act 2023, so readers should treat the Playbook's procurement reform notes as a preview and check current guidance for the enacted detail.

How eSourcing Data helps

The Playbook's policies are, in large part, demands for evidence and process discipline: published pipelines, documented market assessments, early engagement that leaves no supplier advantaged, clear specifications, proportionate KPIs and defensible evaluation. eSourcing Data provides the working environment for that discipline. Market engagement can be run and recorded through the platform, procurement documents and clarifications are managed in one place, and structured evaluation with full audit trails demonstrates that criteria were applied consistently and low cost bids were properly scrutinised.

For the wider public sector audiences that version 4 explicitly welcomes, the platform makes proportionate adoption practical: below-threshold and lower-risk exercises can run through the same system with lighter workflows, while complex projects carry the full evidence chain from market assessment to award. Reporting across the portfolio supports pipeline publication, KPI transparency and the early contract-end planning the Playbook asks for, turning policy compliance into a by-product of well-run procurement rather than a separate paperwork exercise.

What to do about it

1. 1Publish a commercial pipeline covering at least 18 months, ideally three to five years, and update it at least every 6 months.
2. 2Run a market health and capability assessment early in every potential outsourcing project and keep it under review.
3. 3Test each project against the complex outsourcing definition and plan for a PVR, Should Cost Model, pilot and Cabinet Office engagement where it applies.
4. 4Conduct early market engagement before the Strategic Outline Case, stating your proposed approach to inflation, and publish it openly.
5. 5Complete a proportional delivery model assessment before deciding to outsource, insource or re-procure.
6. 6Design relevant, proportionate KPIs and prepare to publish three for your most important contracts.
7. 7Scrutinise risk allocation and payment mechanisms against genuine market feedback, and plan early for contract expiry.