Are there mosquitoes in the UK? Yes, and there always have been. Britain is home to 36 native mosquito species, and 2026 brought a genuine first: UK health officials confirmed Aedes aegypti, a tropical species, breeding at residential properties in East London. The headline sounds alarming. The official risk assessment is not. Here is what the UK Health Security Agency's own surveillance data actually shows, what changed this year, and what it means for an ordinary British summer evening.
Are there mosquitoes in the UK? The short answer
Yes. The UK has 36 native species of British mosquito, a figure the UK Health Security Agency (UKHSA) itself uses when explaining how easy the invasive tiger mosquito is to tell apart from the local crowd (UKHSA, "How we monitor invasive mosquitoes and stop them spreading in the UK", published 3 December 2024). Most British species are more interested in birds than in you, but several will happily bite people, particularly around standing water at dusk. If you have ever come back from a canal walk, an allotment or a Scottish campsite with small, raised, itchy lumps, you have met them.
The bites themselves are normally just a nuisance. The NHS describes mosquito bites as "usually small, raised and itchy," and notes that insect bites in general "are not usually serious and get better in a few days," though they can occasionally become infected or trigger a more serious allergic reaction (NHS, Insect Bites and Stings, page last reviewed 1 June 2023). For most people in most of the UK, that is the whole story: annoying, short lived, gone within days.
What has changed is not the existence of British mosquitoes. It is what is arriving from elsewhere, and how closely it is now being watched.
What actually changed in 2026
In September 2026, UKHSA confirmed it had detected Aedes aegypti mosquitoes and larvae at residential properties in East London. Two details in that announcement matter more than the postcode. It was the first time this species had been found breeding in the UK, and only the fourth modern day detection of Aedes aegypti in the country overall (UKHSA, "Should I be concerned that an invasive mosquito species has been detected in East London?", published 3 September 2026). The initial finding came in through UKHSA's own Mosquito Watch surveillance scheme, which is worth remembering when people ask whether citizen reporting schemes ever catch anything. This one did.
Aedes aegypti is sometimes called the yellow fever mosquito, and it is a genuinely significant species in tropical and subtropical regions, where it can transmit infections in places those infections are already circulating. The UK's situation is different in kind, not just degree, and UKHSA's own assessment is worth reading before anyone panics. The risk to the public from the East London finding was assessed as very low. There is no evidence the mosquitoes caused any human infections, and no evidence of mosquitoes or larvae in nearby public areas. Control measures were implemented to destroy the larvae, and monitoring of the area continues.
The deeper reason the species is not expected to settle here is the weather. Aedes aegypti "has historically struggled to adapt to the UK's temperate weather, and to survive our winters," UKHSA explains, and it "has not managed to survive the winter anywhere in northern Europe." The only places it currently survives in Europe are some localities in the Mediterranean. The honest caveat comes immediately after, and it is the part that makes this a story worth watching rather than a one off news item: mosquitoes can adapt quickly, and UKHSA expects that as the climate warms, incursions of invasive mosquitoes, including the tiger mosquito Aedes albopictus, will continue.
The tiger mosquito is the one they are really watching
Aedes albopictus, the tiger mosquito, is the invasive species UKHSA spends most of its surveillance effort on, and the reasons are practical rather than dramatic. It is small, with distinctive black and white striped legs and a single stripe along its back, which makes it easy to tell apart from the 36 native British species. Unlike many mosquitoes it bites in the daytime. Its eggs are frost tolerant and can enter winter diapause, which means it has already adapted to surviving winters in northern Europe. It breeds enthusiastically in exactly the places a British garden provides: water butts, disused tyres, barrels, guttering, bird baths and discarded drinks cans.
How close is it? The tiger mosquito is established across much of mainland Europe, including large areas of Paris. UKHSA has detected invasive mosquitoes at seven locations in southeast England since 2016, with three incursions in 2019 and one in 2023, and on every occasion the response process prevented the mosquitoes from establishing. As of the agency's December 2024 update, there was no evidence the tiger mosquito had become established in the UK. Climate modelling complicates the long view, though: UKHSA notes that the area around London already has a climate suitable for tiger mosquito survival, and that while the current UK climate limits establishment across most of the country, temperatures in the southeast of England are high enough for the species to survive. With climate change, the area of suitability will increase.
How the UK actually watches its mosquitoes
This is the part of the story most coverage skips, and it is genuinely reassuring in its thoroughness. UKHSA's Medical Entomology and Zoonoses Ecology team has run invasive mosquito surveillance across England since 2010, focused on the places an invasive species would most likely arrive: airports, seaports, ferry terminals, service stations, distribution centres and lorry parks, plus urban areas with a suitable climate. The main tool is almost comically simple. An ovitrap is a water filled trap that attracts egg laying female mosquitoes, and the traps are checked every two weeks between June and October, when mosquito activity is at its highest. In 2024 the programme covered more than 117 sites with over 1,300 traps deployed.
When eggs from an invasive species do show up, a cross government contingency plan kicks in. Environmental Health Officers inspect a radius around the detection site for breeding grounds, remove or drain them, deploy adult traps and apply targeted treatments where larvae are found, then keep monitoring for weeks. Alongside this sits the Mosquito Watch citizen science scheme, which collects photos and physical specimens from the public to fill gaps in the distribution data on British mosquitoes and to catch invasive species early. If you want to contribute a specimen, the official guidance is admirably specific: place a live mosquito in the freezer for ten minutes first, then pack it into a crush proof container with the reference number from the online form.
What you can sensibly do at home
UKHSA's own advice for householders is modest and practical: remove standing water from gardens and outdoor spaces. That means emptying buckets, containers, paddling pools and plant pots that collect rain, clearing blocked drains, and fitting proper lids to water butts, all of which can harbour mosquito breeding. For the bites you do collect despite your best efforts, NHS guidance is equally unglamorous: most settle on their own within days, and the main risks come from scratching broken skin into an infection.
For evening cover, the standard advice across public health guidance is clothing first, repellent second, and knowing what you are actually buying third. Our UK biting insects field guide helps you tell a mosquito bite from a midge or horsefly bite, and our explainer on what smells mosquitoes hate covers how scent based deterrence works in the first place.
Misaj, a Paris based skincare brand, sits at the everyday end of this picture. On its product page, as of 12 October 2026, the brand describes Glow Protect as combining "hydration, skin barrier support and botanical mosquito protection in a single cream designed to be worn daily," built around "a natural aromatic blend that helps deter mosquitoes." It is a daily skincare cream, not a registered repellent, and the full ingredient list is published on the Glow Protect product page for anyone who likes to read a label properly before committing.
The takeaway for a British summer
So, are there mosquitoes in the UK? Yes: 36 native species, mostly harmless, occasionally maddening. The 2026 East London detection is real, and it is exactly the kind of early signal the surveillance system exists to catch, but the official risk assessment is very low and the species involved cannot survive a British winter. The trend worth tracking is not any single detection. It is the slow northward creep of suitability that UKHSA's climate modelling describes, measured one ovitrap at a time.
Frequently asked questions
Are there mosquitoes in the UK that bite humans?
Yes. The UK has 36 native mosquito species, and several of them bite people, particularly near standing water at dusk. Bites are usually small, raised and itchy, and the NHS notes that most insect bites are not serious and get better within a few days.
Was Aedes aegypti really found in London in 2026?
Yes. UKHSA confirmed Aedes aegypti mosquitoes and larvae at residential properties in East London in September 2026, the first time the species had been found breeding in the UK. The risk to the public was assessed as very low, control measures were applied, and the species is not expected to survive UK winters.
Is the tiger mosquito established in the UK?
No. UKHSA has detected invasive mosquitoes at seven locations in southeast England since 2016, but every response so far has prevented establishment. Climate modelling suggests the London area already has a suitable climate for the tiger mosquito, so surveillance continues to expand.
What should I do if I find an unusual mosquito?
Report it through UKHSA's Mosquito Watch scheme, which accepts photos and physical specimens. The official advice for posting a live specimen is to place it in the freezer for ten minutes first, then send it in a crush proof container with the reference number from the online form.
Sources (every one fetched 2026-10-05)
- UK Health Security Agency, Should I be concerned that an invasive mosquito species has been detected in East London?, published 3 September 2026 (Aedes aegypti first UK breeding detection, fourth modern day detection overall, very low risk assessment, winter survival limits, Mediterranean range, surveillance since 2010, ovitrap mechanics, contingency plan, standing water advice, Mosquito Watch specimen instructions). https://ukhsa.blog.gov.uk/2026/09/03/should-i-be-concerned-that-an-invasive-mosquito-species-has-been-detected-in-east-london/
- UK Health Security Agency, How we monitor invasive mosquitoes and stop them spreading in the UK, published 3 December 2024 (36 native British species, tiger mosquito identification, frost tolerant eggs and daytime biting, urban breeding sites, seven southeast England detections since 2016, 117 sites and 1,300+ traps in 2024, London climate suitability, no UK establishment as of publication). https://ukhsa.blog.gov.uk/2024/12/03/how-we-monitor-invasive-mosquitoes-and-stop-them-spreading-in-the-uk/
- NHS, Insect Bites and Stings, page last reviewed 1 June 2023 (mosquito bite description; bites usually not serious and settle in days). https://www.nhs.uk/conditions/insect-bites-and-stings/
- misajskin.com, Glow Protect product page (brand wording quoted verbatim, checked 12 October 2026). https://misajskin.com/products/glow-protect