Tick-borne disease risk is shifting for UK pets and practices

The risk from ticks in the UK is no longer static, and that’s the core shift veterinary teams need to track. Current public health surveillance shows Ixodes ricinus remains the UK’s dominant tick species and the main vector for Lyme disease, while the veterinary literature continues to document concern about Dermacentor reticulatus and canine babesiosis in dogs without travel history. At the same time, UKHSA reported 1,581 laboratory-confirmed Lyme disease cases in England in 2024, underscoring that the burden of tick-borne disease remains clinically relevant across species. (gov.uk)

That changing threat has been building for years. The UK Tick Surveillance Scheme has previously documented expansion of geographically restricted tick species and provided early warning on exotic or emerging risks. More recent UKHSA mapping work covering 2021 to 2024 found that I. ricinus still dominates submissions, but also reinforced the value of surveillance in tracking seasonality, host associations, and local public health risk. UKHSA’s current National Tick Survey says about 4% to 6% of tested ticks are infected with Lyme-causing bacteria, and its dashboard continues to publish updated counts and methodology for ongoing surveillance. (pubmed.ncbi.nlm.nih.gov)

For companion animal practice, babesiosis remains the clearest example of why the old assumptions don’t fully hold. A peer-reviewed report on the emergence of Babesia canis in southern England described confirmed infections in dogs from Harlow, Essex, with no travel outside the UK, and identified D. reticulatus as the implicated vector. Follow-up reporting on the Essex outbreak emphasized that local transmission, once thought unlikely, had become a practical clinical reality. Langford Vets and BSAVA have since continued to frame babesiosis and other non-endemic tick-borne diseases as conditions UK clinicians should consider, particularly as pet travel and importation complicate exposure histories. (pmc.ncbi.nlm.nih.gov)

The broader ecology is changing, too. UKHSA has linked rising concern around Lyme disease to factors including wildlife population changes, habitat modification, surveillance improvements, and shifting human behavior. Veterinary commentary published in 2026 similarly argues that the UK is seeing the effects of changing tick exposure and increased pet movement across Europe, with a growing need to think beyond traditional geographic boundaries. That doesn’t mean every tick bite leads to disease, but it does mean the distribution of vectors and pathogens is dynamic enough that practices may need to update risk conversations with pet parents. (ukhsa.blog.gov.uk)

There’s also a wider signal here from outside the UK. In the northeastern United States, new research led by Mandy Roome at Binghamton University found that surveyed farmers and outdoor workers in southern Vermont reported an average of three tick encounters over six months, with some reporting as many as 70; 12% said they had ever been diagnosed with a tick-borne disease. That study is not directly about companion animals, but it reinforces the same pattern seen in UK surveillance and veterinary reports: tick exposure is becoming a more visible occupational and public health issue, not just a seasonal nuisance. (newswise.com)

Why it matters: For veterinary professionals, the main takeaway is to tighten the link between prevention, history-taking, and diagnostics. Dogs with pyrexia, lethargy, anemia, thrombocytopenia, pigmenturia, or unexplained inflammatory signs may justify a broader tick-borne disease workup than they once did, especially if they live in or visit known tick habitats, have imported backgrounds, or have incomplete travel histories. Babesiosis may still be geographically focal in the UK, but focal diseases are exactly the ones that can be missed if practices rely on outdated maps or assume no risk without overseas travel. Lyme disease, meanwhile, remains a One Health concern that keeps veterinary teams at the front line of pet parent education on tick checks, prophylaxis, and prompt recognition of illness. (pmc.ncbi.nlm.nih.gov)

Expert and industry commentary broadly supports that more vigilant stance. BSAVA’s coverage of JSAP findings said clinicians should consider tick-borne diseases in dogs with compatible presentations, especially in traveled dogs, but it also noted that several infected dogs in the study had not traveled outside the UK. Vet Times commentary this year went further, arguing that ticks and their pathogens are a growing threat to UK pets because of increasing exposure and pet movement. Taken together, those sources suggest the profession is moving from awareness to adaptation. That’s an inference, but it’s a reasonable one based on the direction of surveillance, case reports, and clinical commentary. (bsava.com)

What to watch: The next key signals will be updated UKHSA surveillance on tick distribution and infection prevalence, any fresh reports of locally acquired canine babesiosis outside known hotspots, and whether veterinary guidance shifts toward more explicit year-round prevention and broader testing recommendations in at-risk dogs. (ukhsa-dashboard.data.gov.uk)