Josh Hellings

Data Visualisation Engineer specialising in interactive web-based visualisations and storytelling through data.

Data scientist at the Economics Observatory and researcher at the London School of Economics.

Justice League

DashboardSeptember 2026

What if Manchester City lose points? Test deductions for every season since 2009/10.

Mapping English Devolution

Research toolAugust 2026

Research site for LSE Growth Lab and LSE Cities. Map the powers of each strategic authority, compare local economies, and find areas that face similar challenges.

Tax Explorer

ToolSeptember 2025

Visualise your marginal tax rates. Under development

Britain's Trade Challenge

PaperApril 2025

With Richard Davies, in the National Institute Economic Review. We trace the origin of 67,000 supermarket products to measure how trade barriers push up food prices.

ECO Semantic Search

ToolFebruary 2025

Search every Economics Observatory article by meaning, not keywords, so editors can find old pieces to repost and cite. Built on OpenAI embeddings and Pinecone.

ECO Styles

PackageJanuary 2025

Python package on PyPI that applies Economics Observatory house styles to Altair charts, with helpers for sources, recession shading and population data.

UK Dashboard

DashboardNovember 2024

Live dashboard of UK economic indicators. Under development

Chart Tutorials: Vega-Lite

TeachingOctober 2024

Growing collection of tutorials related to chart building using Vega-Lite. Under development

Map Data

DataSeptember 2024

Boundary files for the UK, US and world, simplified and standardised as TopoJSON, ready to drop into Vega-Lite and Altair maps.

Data Visualisation Masterclass

TeachingJuly 2024

One-day course for beginners, co-developed at the Economics Observatory. Five sessions take students from their first Vega-Lite chart to a live website of their own.

AutoCPI

PaperMay 2024

Launch paper for AutoCPI, a daily scrape of UK supermarket prices. With Richard Davies and Finn McEvoy, we show how AI can make price data faster, bigger and cheaper.

21 charts for 21 countries

ChartsMay 2024

World's 21 most populous countries, compared through a series a charts on five economic topics. These charts were produced for LSE's Growth Day 2024.

Local Authority Debt

Data storyMay 2024

Visualising the debt crisis across UK Local Authorities.

Economics for Everyone

ChartsMarch 2023

Selection of charts produced for a new macroeconomics course at the University of Chicago.

London crime during the pandemic

CourseworkJanuary 2023

Data analysis assignment for UoB software & programming module.

Housing

ChartsApril 2022

Selection of charts on house building in the UK. Produced for the Economics Observatory.

Monetary Policy

ChartsApril 2022

Selection of charts focusing on key economic indicators related to Unit 10 of the Core Econ textbook: Banks, Money and the Credit Market. Produced for the Economics Observatory.

Data Science: Project

CourseworkJanuary 2022

Renewables and the potential for solar. The page holds a collection of charts produced for the Data Science course final project.

Data Science: Portfolio

CourseworkDecember 2021

A collection of charts produced throughout the Data Science unit, part of the University of Bristol Economics course. Each chart demonstrates different data science and visualisation techniques.