Who we are
The Manor of Oak is a specialist delivery assurance, governance, and project controls transformation consultancy supporting complex, high‑stakes programmes across defence, nuclear, infrastructure and government sectors.
We strengthen organisational capability, uplift governance and PMO maturity, and provide disciplined, independent insight that improves decision‑making, predictability and delivery confidence.
Founded by multi‑chartered, award‑winning experts, we bring clarity, structure and measurable impact to organisations navigating transformation, complexity and critical national delivery. Our experience spans £35BN+ portfolios, major defence programmes, national digitalisation initiatives, and enterprise‑level transformation across government.
We are recognised for transforming underperforming environments, embedding disciplined governance, and delivering measurable uplift in maturity, performance and organisational resilience.
What we do
We deliver structured consultancy and advisory across three core pillars of expertise:
-
01
Delivery Assurance & Governance Uplift
For organisations needing stronger predictability, compliance, and executive confidence.
Independent, evidence‑based assurance that strengthens decisions, reduces delivery risk and provides clarity across complex programmes and portfolios. Our delivery assurance work has uplifted governance compliance from 45% → 95%, improved schedule maturity from Level 2 → Level 4, and increased schedule integrity by 30%, validated through independent audit.
-
02
PMO Governance & Operating Model Advisory
Designing disciplined governance frameworks, PMO operating models and organisational structures that uplift maturity, improve alignment and support assured delivery.
We modernise PMO capability, embed structured reporting, and design governance frameworks that accelerate decision‑making and strengthen organisational performance. Our work has reduced reporting cycles by 35–40%, uplifted EVM maturity from Level 1 → Level 3, and improved cross‑departmental delivery rhythm by 45%.
-
03
Maturity Assessment & Capability Uplift
Assessing PMO and project controls maturity, diagnosing strengths and gaps, and designing governance and delivery structures that set programmes up for success from day one.
We deliver full organisational capability assessments, maturity roadmaps, and targeted uplift programmes that strengthen compliance, performance and delivery confidence.
Our capability uplift work has delivered seven integrated baselines with 98% schedule integrity, reduced unresolved RAIDO backlogs by 40%, and improved cost forecasting accuracy from +12% → +5%.
Our consultancy strengthens capability, aligns strategy with delivery, and supports long‑term organisational resilience and performance.
Our expertise
We combine ethical principles with disciplined consultancy practice to deliver clarity, structure and measurable impact. Our expertise includes:
- Independent delivery assurance
- Governance and PMO operating model design
- PMO and project controls maturity uplift
- Strategic alignment and decision-support
- Organisational resilience and transformation support
- Portfolio performance, benefits realisation & investment confidence
- Programme recovery, turnaround & high‑risk delivery support
- Resource, operations and team capability development
- Interim senior leadership for critical programmes
Our experience includes delivering £4.2M cost avoidance, £3.5M value optimisation, enabling £2BN investment approval, and strengthening delivery confidence from Amber → Green across critical workstreams.
Who we support
We work with organisations committed to responsible, high‑confidence delivery, including:
- Defence and nuclear organisations
- Government departments
- Critical national infrastructure programmes
- Regulated and safety‑critical environments
- Executive leadership teams
- Private sector organisations
- Charities and mission‑driven organisations
- Educational and cultural institutions
Why organisations choose us
Organisations choose us for our disciplined approach, sector expertise and measurable impact.
We strengthen capability, modernise governance and enhance delivery confidence across complex, high‑stakes environments, ensuring programmes are equipped to adapt, evolve and succeed.