Wasp Species in the UK: Identification and Behaviour

Which Wasp Species Are Found in the UK?

The UK is home to over 9,000 wasp species, but the vast majority are solitary species that do not form colonies and do not sting. When people talk about "wasps" as a pest, they are referring to social wasps — the ones that build papery nests and become aggressive around food in late summer.

Two social wasp species cause the majority of pest problems in the UK: the common wasp and the German wasp. Several other species are encountered occasionally.

Common Wasp (Vespula vulgaris)

The common wasp is the most frequently encountered species in UK homes and gardens. It is responsible for the majority of wasp nest callouts.

• Size: workers 12–17mm; queen 20mm.
• Colour: bright yellow and black banding. The face has a distinctive anchor-shaped black mark.
• Nest: papery, grey-brown, usually enclosed with a small entrance hole. Commonly found in loft spaces, wall cavities, underground, and in sheds.
• Colony size: mature nests contain 5,000–10,000 workers by late summer.
• Temperament: moderately aggressive when the nest is disturbed. Becomes more aggressive and visible in August–September.

German Wasp (Vespula germanica)

The German wasp is very similar to the common wasp in appearance and behaviour, and the two species are frequently confused. It is the second most common pest wasp in the UK.

• Size: workers 13–17mm; queen 20mm.
• Colour: yellow and black, very similar to the common wasp. The face has three small black dots instead of the anchor mark — but this is difficult to see without close examination.
• Nest: similar to the common wasp but nests can grow larger — some German wasp nests reach the size of a large beach ball by late summer.
• Colony size: can exceed 10,000 workers. Typically slightly larger colonies than the common wasp.
• Temperament: generally considered slightly more aggressive than the common wasp, particularly when foraging for food.

Tree Wasp (Dolichovespula sylvestris)

The tree wasp is smaller and less common than the common or German wasp. It builds aerial nests — typically suspended from tree branches, bushes, or under eaves — rather than in cavities.

Tree wasp nests are smaller (usually 500–2,000 workers) and the season is shorter. The colonies die out earlier in summer than Vespula species. They are less aggressive and less frequently a pest problem, but nests near doorways or paths may still require treatment.

Median Wasp (Dolichovespula media)

The median wasp is a relatively recent arrival in the UK (first recorded in the 1980s) and is now established across southern and central England. It is larger than the common wasp — workers are 18–22mm — and builds large, conspicuous aerial nests in hedges, trees, and under eaves.

Median wasps are noticeably more defensive of their nests than common or German wasps. They may attack at a greater distance from the nest. Despite this, colonies are smaller and the season is shorter. Nests in high-traffic areas should be treated professionally.

Hornets

The European hornet (Vespa crabro) is the UK's largest social wasp — queens can reach 35mm. Despite their intimidating size, European hornets are generally less aggressive than common wasps and rarely sting unless the nest is directly disturbed.

The Asian hornet (Vespa velutina) is an invasive species that has been detected in the UK in small numbers since 2016. It is slightly smaller than the European hornet, with a distinctive dark body and yellow-tipped legs. Asian hornets are a serious threat to honeybees. If you suspect an Asian hornet sighting, report it to the Non-Native Species Secretariat.

Hornet nests (European) are treated the same way as wasp nests. They are typically found in hollow trees, wall cavities, and loft spaces.

Wasps vs Bees: How to Tell the Difference

It is important to distinguish wasps from bees, as bees are beneficial pollinators and should not be killed unnecessarily.

• Wasps are smooth, shiny, and brightly coloured with defined yellow-and-black stripes and a narrow waist.
• Honeybees are furry, slightly plump, and golden-brown rather than bright yellow.
• Bumblebees are large, round, and very fuzzy, with broad colour bands (often black and yellow, or black and orange).
• If you have a bee nest, contact a local beekeeper for removal rather than a pest controller. BuzzKill can advise if you are unsure what you are dealing with.

Does Species Matter for Treatment?

The treatment method is the same regardless of wasp species — professional insecticidal dust or liquid applied to the nest entrance. The colony collapses within 24–48 hours.

Species identification can be useful for predicting nest location (cavity nesters vs aerial nesters) and assessing aggression level, but the treatment itself does not change.

A professional wasp nest treatment is the safest and most effective option regardless of species. Contact BuzzKill for same-day treatment.