UK Rat Infestations Are Rising — What the Data Is Really Telling Us

Over the past few years, rat activity across the UK has shown a clear and consistent upward trend. What was once seen as a background issue is now becoming a more visible and material risk — particularly within urban and commercial environments. The latest data suggests this is not a short-term spike, but part of a wider and sustained shift in how pest activity is evolving across the country.

A sharp rise in recorded infestations

Local authority figures highlight the scale of this change. In 2022, UK councils recorded approximately 225,430 rodent infestations. By 2023, this had risen to 271,343 — an increase of over 45,900 cases, equating to a 20.4% rise in just one year, based on analysis of UK council data by Direct Line Group. This represents a significant step-change in activity levels, rather than a gradual increase.

Continued pressure on pest control services

In 2024, reporting shifted from recorded infestations to pest control interventions, providing a slightly different lens on the issue. During that year, UK local authorities recorded 291,132 pest control visits, with 91% relating to rodents such as rats and mice. While the reporting method changed, the volume of interventions strongly indicates that activity remained consistently high following the sharp increase seen in 2023, continuing to place sustained pressure on pest control services.

Ongoing growth across the industry

More recent industry data suggests this trend has not slowed. Reporting from Rentokil, published via PCT Magazine, indicates that rat activity increased by a further 10% between 2024 and 2025, with elevated levels continuing into early 2026. This ongoing growth reinforces the view that rat activity is not only rising, but becoming more embedded across urban environments.

Rats are now the dominant pest issue

While some public datasets group rats and mice together under the broader category of “rodents”, industry reporting provides a clearer picture. Within that grouping, rats are consistently identified as the primary driver of pest control activity, particularly in urban and commercial environments.

Rats now account for approximately 25% of all pest activity in the UK, making them the single largest individual pest category, according to the British Pest Control Association (BPCA).

A key reason for this is how rats access buildings. According to BPCA guidance, up to 80% of rat infestations in urban areas originate from the drainage system, where rats are able to move through pipe networks and enter properties through defects, gaps or unprotected entry points.

This ability to travel unseen through interconnected infrastructure — and enter through openings as small as 15–20mm — makes rats significantly more difficult to control than many other pests, and a far more persistent issue once established.

A deeper, structural issue

Taken together, this data points to a broader underlying issue. The increase in activity is not happening in isolation — it is being driven by a combination of factors including urban density, waste generation, ageing infrastructure and environmental pressures. These conditions create environments where rat populations can establish, move and persist far more easily than in the past.

Why infestations keep coming back

One of the most important — and often overlooked — factors is how rats are actually accessing buildings in the first place.

In many cases, infestations are not starting inside a property, but below it. Rats are able to travel through drainage networks and enter buildings through small gaps, damaged pipework or unprotected entry points. Once inside, traditional pest control methods may reduce activity, but they do not prevent rats from returning via the same route.

This creates a familiar cycle:

An infestation appears internally

Pest control treatment reduces activity

The entry point remains unchanged

Rats re-enter through the same route

Over time, this leads to repeated call-outs, ongoing cost and continued disruption.

Activity is being managed — but not resolved

This helps explain why, despite rising levels of pest control intervention, activity remains consistently high. Traditional approaches are often reactive by nature — focused on dealing with the visible presence of rats once they are inside a building.

While effective in the short term, these approaches do not always address the underlying access routes that allow infestations to occur in the first place.

Without controlling those entry points — particularly within drainage infrastructure — the problem is not fully resolved, only temporarily reduced.

A shift towards prevention at source

As a result, there is a growing shift across the industry towards preventative, infrastructure-led approaches.

Rather than relying solely on treatment after the fact, the focus is increasingly on stopping rats from entering buildings altogether — particularly at key access points within drainage systems.

Solutions designed to block or control these entry routes are becoming an important part of a more complete strategy, working alongside traditional pest control rather than replacing it. By addressing the problem at source, they help reduce the likelihood of repeat infestations and create a more sustainable long-term solution.

What comes next

Understanding the scale of rat activity is only the first step. The next is to explore why urban environments are particularly exposed, how drainage systems enable movement between properties, and what effective prevention actually looks like in practice.

In the next article, we’ll look at why urban environments have become a perfect storm for rat activity — before diving deeper into how rats enter buildings and the practical steps that can be taken to stop them.