1
Frame the claim
Document intended outcomes, geography, cohorts and the evidential basis at approval.
Central government · Local authorities · UK cities
Prove what policy delivered — once the data catches up.
DDPP works with Government statistics to provide decision support on policies grounded in population-level data. When early evidence was sample-based or speculative, we stress-test implementations and measure whether claimed outcomes have manifested — months to years after policies bed in.
Two layers: where we analyse, what we prove
Policy domains are where interventions live. Health and equity are how every commission is judged — using population data and community evidence across UK cities and their regions.
What we analyse
Transport
Mobility, access and street schemes — stress-tested at corridor and city-region scale.
Housing & place
Affordability, tenure and regeneration — the glue linking neighbourhoods to regional markets.
Economic growth
Jobs and investment claims — with employment and income read through the equity lens.
Education & skills
Adult and workplace learning — uptake and progression after programmes have bedded in.
What we prove
Health & equity
Cross-cutting lenses on every domain — who benefited, who bore costs, and what moved in official data.
From policy claim to evidenced outcome
Many sustainable policies launch on pilots, modelling or limited surveys. DDPP is built for the later stage — when ministers, directors and elected members need to know whether promises held up at scale.
2
Map official data
Identify population-level indicators and lag structures that can confirm or refute the claim.
3
Listen in place
Run forums and polling in affected communities to capture lived experience statistics miss.
4
Report for action
Deliver decision-ready synthesis: continue, adapt, scale or stop — with health and equity breakdowns.
Built for commissioning organisations
We support teams that need independent, rigorous analysis — not advocacy.
Central government
- Post-implementation review and Green Book-aligned evidence
- Cross-departmental programmes spanning transport, housing, growth and skills
- National frameworks applied across city typologies
Local authorities & combined authorities
- Scheme evaluation beyond before/after snapshots
- Ward, LSOA and corridor-level health and equity reporting
- City–region relationships with neighbouring authorities
Ready to stress-test a policy that has had time to bed in?
Tell us the policy domain, place and outcomes that were promised. We will outline how official statistics and community evidence can be combined for a proportionate proof exercise.