About Data-Mash-Up

We're a modelling agency – but not the kind that manages supermodels. We build super models, mashing diverse data sets and providing bespoke financial analysis.

Boutique Consultancy,
Big Impact

Data-Mash-Up (DMU) is a boutique consultancy specialising in data-driven financial and commercial analysis. We combine financial rigour, engineering insight and analytical depth to help organisations make evidence-based decisions.

Our work enables clients to understand the full financial, economic, social and environmental implications of their projects and investments - ensuring that capital and operational expenditure are allocated transparently, efficiently, and strategically.

Our agency is made up of highly skilled nerds – financial analysts, accountants, mathematicians, engineers, data scientists, musicians and gamers – affectionately known as 'mashers'.

Meet the Mashers

The team behind the data.

Gary KellyFCA CFA

Director

The numbers guy who actually makes spreadsheets exciting. 25+ years turning complex financial puzzles into clear insights across waste, renewables, and utilities. Loves a good risk model almost as much as a good coffee.

Daniel Bower

Director

Infrastructure nerd turned data whisperer. 13 years getting his hands dirty across roads, rail, water, and waste - now channelling all that real-world know-how into models that actually make sense. Fluent in engineer and executive.

Yiheng Liang

Data Analyst

The wizard behind the curtain. Builds the clever systems that crunch the numbers while everyone else sleeps. Python pipelines, cloud platforms, forecasting models - if it involves data doing cool things automatically, he's probably built it.

Our Approach

How we deliver value to our clients.

Evidence-Based

Every recommendation is grounded in rigorous data analysis and transparent methodology.

Bespoke Solutions

Custom models tailored to your specific context, requirements, and objectives.

Collaborative

We work alongside your team, building capability and ensuring knowledge transfer.

Please note: We don't provide Financial Services (which have legal connotations/requirements) and we don't offer engineering services (we partner with others for these). We are more strategic and offer services in line with investment analysis to enable effective decisions, understand your business and untangle complex data sets into simple, absorbable ideas.