Early in 2026, our reporting tool Health Insights, seemed to reveal a new concern.

The tool is for all rail industry to report on the health of staff, so it gives us a good view of what is happening across the industry. When it reveals new concerns, we explore further.

What the data showed

We must not prejudge the data and dismiss a result just because it is not what we expect.

It’s good but maybe not surprising news that rail employees don’t get poisoned at work very often. However, in January 2026, poisonings suddenly quadrupled in the data reported to Health Insights. That’s a big and unexpected increase.

Taken at face value, this would suggest a dramatic and concerning problem that needed urgent attention.

Further investigation

RSSB health specialists and data quality assurance processes allowed prompt examination of the data. This found that stomach upsets had been recorded under ’poisoning’ rather than ‘gastrointestinal illness’. Once identified, the anomaly was quickly addressed, and no new concern in rail workplace health risks was found.

The importance of health data

RSSB have a quality approach to data use and analysis. Health data is generally less mature than safety data and it tends to be collected in multiple systems and by many different stakeholders. Our tool Health Insights is designed with these challenges in mind. It has clear definitions and is a single, simple way for industry to report health data. It also provides a clear picture of health performance.