UK spider identification guide
UK Spiders: Common House Spider Identification Guide
Found a spider in your home, flat, garage or garden? This guide explains the most common UK spiders, how to recognise them, when spider season happens, which spiders can bite, and when professional spider control may be useful.
- Clear identification guide for common UK spiders
- Balanced safety advice without unnecessary panic
- False widow, house spider, cellar spider and more
- Photo advice and spider control support in London
Quick answer
What Are the Most Common UK Spiders Found Indoors?
The spiders most often noticed in UK homes include giant house spiders, cellar spiders, false widow spiders, lace web spiders, missing-sector orb-weavers and zebra jumping spiders. Most are harmless and useful because they feed on flies and other insects. Concern is more reasonable when spiders are recurring indoors, found close to beds or clothing, suspected to be false widows, or causing issues in a rental, hotel, school, office or commercial premises.
- Most UK house spiders are not dangerous to people
- Spider bites are rare and are often misidentified
- Autumn is the peak season for large house spider sightings
- Send a clear photo before attempting removal if you are unsure
Identification table
UK Spiders at a Glance
Use this quick comparison to narrow down what you may have found. Identification from a clear photo is often more reliable than guessing from size alone, because lighting, age and sex can change a spider’s appearance.
| Spider | How to identify it | Where it is found | Risk level |
|---|---|---|---|
| Giant house spider | Large, brown, fast-moving; often has darker patterning on the abdomen. | Homes, sheds, garages, baths, skirting edges and quiet corners, especially in autumn. | Low. Usually runs away and is not a serious health risk. |
| Cellar spider / daddy long-legs spider | Very long thin legs, small pale body, hangs in loose messy webs. | Ceilings, corners, cellars, cupboards, stairwells and quiet rooms. | Low. Harmless and often feeds on other small insects and spiders. |
| False widow spider | Glossy rounded abdomen; brown, dark brown or purplish tone with pale markings that vary. | Window frames, sheds, garages, storage areas, external lights and quiet indoor corners. | Usually low, but can bite defensively if trapped or disturbed. |
| Lace web spider | Stocky spider with dark head and oval abdomen; often in a lace-like web near crevices. | Walls, window frames, brickwork, sheds and sheltered exterior gaps. | Low. Bites are uncommon and usually linked to handling or disturbance. |
| Missing-sector orb-weaver | Pale grey-brown spider; often makes an orb web with one section missing. | Windows, doors, external frames, porches and conservatories. | Low. Commonly mistaken for false widows. |
| Zebra jumping spider | Small black-and-white striped spider; moves in short jumps rather than making a large web. | Sunny walls, windowsills, fences and garden walls. | Low. Small, active hunter and not a household infestation pest. |
| Garden spider | Round-bodied orb-weaver, often with a pale cross-shaped mark on the abdomen. | Gardens, hedges, doorways, plants and external webs. | Low. Useful garden predator; usually best left alone outside. |
| Money spiders | Tiny dark spiders, often seen as small specks or fine silk strands. | Gardens, windows, vegetation and sometimes indoors near light. | Low. Harmless and usually temporary visitors indoors. |
Common species
Common UK Spiders Found in Homes and Around Buildings
The strongest spider identification pages explain where each species is likely to be found, what it looks like, and whether it is a genuine concern indoors. This guide focuses on the spiders most relevant to UK homes rather than rare outdoor species.
Giant House Spider
Large, brown and fast-moving; males are often noticed running across floors during autumn spider season.
Where to check: Look in bathrooms, skirting edges, basements, garages, sheds and quiet corners.
Cellar Spider
Long, delicate legs and a small body; often sits upside-down in a loose web and vibrates when disturbed.
Where to check: Common in ceiling corners, cupboards, cellars, stairwells and quiet storage spaces.
False Widow Spider
Rounded glossy body with variable pale markings. Many harmless spiders are mistaken for false widows.
Where to check: More common around window frames, sheds, garages, external lights and undisturbed indoor corners.
Lace Web Spider
A stocky dark spider associated with crevices and lace-like webbing. It may be seen around older brickwork and window frames.
Where to check: Often appears around external walls, porches, damp corners and sheltered crevices.
Missing-Sector Orb-Weaver
A common window-frame spider that can be mistaken for a false widow. Its web often has a clear missing section.
Where to check: Usually around windows, doors, porches, conservatories and sheltered external frames.
Zebra Jumping Spider
Small, black-and-white, and active in sunlight. It moves in short jumps rather than sitting in a large web.
Where to check: Found on sunny walls, windowsills, fences, garden walls and sometimes inside near windows.
Safety and bites
Are UK Spiders Dangerous?
Most UK spiders are not dangerous to people and do not need treatment simply because they are present. Even spiders that can bite usually do so only when trapped, squeezed or handled. The sensible approach is to identify the spider, avoid bare-hand handling, and seek medical advice if a suspected bite causes worsening symptoms or you feel unwell.
Bon Accord can help with identification and removal, but we do not diagnose bites. If symptoms are severe, spreading, infected, or associated with breathing difficulty, dizziness or facial swelling, seek medical advice urgently.
Avoid unnecessary panic
Many Spider Bites Are Misidentified
- Do not pick up or squeeze a spider with bare hands
- Take a clear photo from a safe distance
- Record where it was found: bedroom, shed, window frame or clothing
- Avoid broad insecticide spraying unless there is a confirmed need
- Call for help if spiders recur in sensitive indoor areas
Seasonality
UK Spider Season: Why More Spiders Appear in Autumn
Large house spiders are often noticed in late summer and autumn because males leave hidden retreats and move through homes while searching for females. This can make it look as though a sudden infestation has appeared, even when the spiders were already nearby in sheds, garages, wall-floor edges or quiet corners.
- Autumn sightings are often roaming males, not a dangerous infestation
- Open windows, gaps, utility routes and cluttered storage areas increase sightings
- Other insects indoors can also attract spiders because they are prey
- Regular cleaning and sealing obvious gaps can reduce repeat activity
Where to look
Where Spiders Hide in London and UK Homes
Spiders are often a sign of quiet harbourage and available insect prey rather than poor hygiene. In London properties, they are often found around window frames, basements, converted flats, communal stores, lofts, garages, sheds and undisturbed storage areas.
| Area | Why spiders appear there | What to check |
|---|---|---|
| Window frames and doors | Light attracts small flying insects; gaps provide web sites. | Frames, trickle vents, corners, external lights and curtains. |
| Bedrooms and wardrobes | Quiet fabric areas and undisturbed corners can shelter spiders and insects. | Behind beds, under furniture, stored clothing, skirting and window corners. |
| Bathrooms and baths | Smooth surfaces trap roaming house spiders that cannot climb out easily. | Baths, basins, pipe boxing, floor-wall junctions and extractor gaps. |
| Lofts and roof voids | Low disturbance, insects and gaps around rooflines create suitable conditions. | Stored items, loft hatches, eaves, insulation edges and webbing. |
| Sheds and garages | Clutter, external gaps and prey insects make these prime spider habitats. | Boxes, tools, corners, door gaps, windows and external walls. |
| Commercial storage | Less frequent cleaning and high storage density can allow webs to build up. | Stock rooms, basements, plant rooms, cupboards and unused corners. |
Prevention
How to Reduce Spiders Indoors Without Unsafe DIY Spraying
The aim is not to remove every spider from the environment. Spiders are beneficial predators. Indoors, the best approach is to reduce access points, remove webs from problem areas, control the insects they feed on, and keep sensitive rooms or commercial areas presentable.
1
Remove Webs and Egg Sacs
Vacuum corners, window frames, ceilings, storage shelves and skirting edges. Dispose of the vacuum contents carefully.
2
Reduce Prey Insects
Persistent spiders may mean flies, moths, ants or other insects are present. Address the food source as well as the spiders.
3
Seal Obvious Gaps
Check gaps around windows, doors, pipe routes, vents, skirting and external storage areas where spiders enter or hide.
4
Declutter Quiet Areas
Stored boxes, unused fabric, sheds and garages create stable hiding places. Reduce clutter and inspect items before moving them indoors.
5
Use Photo Identification
A clear photograph helps avoid unnecessary treatment and prevents harmless spiders being confused with false widows.
6
Call When It Keeps Returning
Professional inspection is useful for recurring spiders, suspected false widows, commercial settings or sensitive rooms.
When to call a specialist
Need Help Identifying or Removing Spiders?
Call Bon Accord Pest Control if you are repeatedly finding spiders indoors, suspect false widow spiders, manage a property where residents or guests are concerned, or need discreet advice for a London home or business.
- Photo identification advice where possible
- Inspection of webbing, harbourage and access points
- Targeted treatment only where appropriate
- Prevention advice for homes, landlords and commercial premises
Contact details
Bon Accord Pest Control Ltd
85 Great Portland Street, London W1W 7LT
Phone: 020 3369 6965
Freephone: 0800 211 8868
Email: info@bonaccordpestcontrol.co.uk
FAQ
UK Spiders FAQs
How many types of spiders are there in the UK?
There are more than 650 species of spider recorded in the UK, but only a small number are commonly noticed inside homes.
What is the most common UK spider found indoors?
Large house spiders and cellar spiders are among the most commonly noticed indoor spiders. False widows, lace web spiders and missing-sector orb-weavers are also often seen around buildings.
Are UK spiders dangerous?
Most UK spiders are not dangerous to people. A small number can bite if trapped or handled, but serious reactions are uncommon. Seek medical advice if a suspected bite worsens or causes concerning symptoms.
What does a false widow spider look like?
False widows usually have a rounded, glossy abdomen and can be dark brown, blackish or purplish with pale markings. Appearance varies, so a clear photo is helpful for identification.
When is spider season in the UK?
Spider season is usually most noticeable in late summer and autumn, when male house spiders move around looking for mates and are more likely to be seen indoors.
Why do spiders keep appearing in my house?
Spiders may enter through gaps, follow insect prey, or live in quiet corners, storage areas, window frames, sheds and garages. Reducing insects and sealing obvious gaps can help.
Should I kill spiders in my home?
In most cases, no. Many spiders are harmless and beneficial because they feed on flies and other insects. If you are concerned, use careful physical removal or send a photo for identification.
Can Bon Accord identify a spider from a photo?
Yes, if the photo is clear enough. Try to capture the body shape, markings and where the spider was found. Bon Accord can advise whether professional inspection or removal is sensible.
When should I call pest control for spiders?
Call pest control if you are seeing recurring spiders indoors, suspect false widows, find spiders near beds or clothing, manage a rental or commercial property, or need discreet professional advice.
Do you provide spider control in London?
Yes. Bon Accord Pest Control provides spider control and identification advice for London homes, landlords, managing agents and businesses.
Helpful next pages
Related Spider and Insect Control Guides
For professional support, visit our spider control service. For species-specific advice, see false widow spider UK, green spider UK, our wider insect control service, the pest library or the contact page.
General Overview of UK Spider Species
In the UK, there are over 650 species of spiders. These spiders can range in size from tiny 0.15 cm specimens to large 20 cm spiders. Most spiders in the UK are harmless to humans, with only a handful of venomous species. The most common species in the UK include the Wasp Spider, Cross Spider, Spitting Spider, and Cucumber Spider.Wasp Spider
The Wasp Spider is one of the most common species of spiders in the UK. These spiders are easily identifiable by their yellow and black striped pattern, which mimics that of a wasp or bee. The Wasp Spider is also one of the larger species in the UK, with a body length of up to 2 cm. Despite their size and markings, Wasp Spiders are not considered venomous and are harmless to humans.Cross Spider
The Cross Spider is another common species of spider in the UK. These spiders are easily identifiable by the signature white cross pattern on their back. Cross Spiders usually range in size from 0.8-2 cm, and are typically found in gardens, woodlands, and meadows. Like the Wasp Spider, Cross Spiders are not considered venomous and are harmless to humans.Spitting Spider
The Spitting Spider is another common species of spider in the UK. These spiders are identifiable by their grey-brown colouration and long, thin legs. Spitting Spiders usually range in size from 0.5-1.5 cm and are typically found in woodlands and gardens. Unlike the Wasp and Cross Spiders, Spitting Spiders are venomous and can be dangerous to humans if provoked.Cucumber Spider
The Cucumber Spider is another common species of spider in the UK. These spiders are easily identifiable by their vibrant green colouration and white spots. Cucumber Spiders usually range in size from 0.5-1 cm and are typically found in gardens, meadows, and woodlands. Cucumber Spiders are venomous, but the venom is not considered dangerous to humans.Labyrinth Spider
The Labyrinth Spider is a species of spider native to the UK and is easily identifiable by its long, thin legs and grey-brown colouration. It usually ranges in size from 0.5-1.5 cm and can be found in woodlands and gardens. Although it is venomous, the venom of the Labyrinth Spider is not considered dangerous to humans.Noble False Widow
The Noble False Widow is a species of spider that has recently been introduced to the UK. It is one of the largest spiders native to the UK, with a body length of up to 2 cm. These spiders are easily identifiable by their brown colouration and white spots. Noble False Widows are venomous, and their venom can be dangerous to humans.Differences between Venomous and Non-Venomous Spiders
One of the most important distinctions between the different species of spiders in the UK is whether or not they are venomous. Venomous spiders are capable of delivering a painful bite if provoked, while non-venomous spiders are harmless to humans. Venomous spiders are usually larger than non-venomous spiders, and may also have distinct markings or colourations.Dangers of Venomous Spiders
While the majority of spiders in the UK are not considered dangerous to humans, there are some species that can be dangerous if not handled properly. The most dangerous species in the UK are the Noble False Widow, Spitting Spider, and Cucumber Spider. These spiders can deliver painful bites and should be avoided if possible. If you encounter one of these spiders, it is best to contact the Natural History Museum for advice. In conclusion, the UK is home to over 650 species of spiders. While most of these spiders are harmless to humans, there are a few species that can be dangerous if provoked. The most common species in the UK include the Wasp Spider, Cross Spider, Spitting Spider, and Cucumber Spider. It is important to familiarise yourself with the differences between venomous and non-venomous spiders, and to take precautions when encountering any spider that may be dangerous.Pest control for spiders
Spiders can be a nuisance in any home, and can be particularly bothersome if they are venomous. Although most spiders are harmless to humans, it is still important to take steps to ensure that spiders are kept under control. In this article, we’ll discuss the importance of pest control for spiders and explore the different methods of spider control. So let’s get started!Why is it Important to Control Spiders?
It is important to control spiders for a number of reasons. For one, spiders can be a nuisance if they are present in large numbers. This can be particularly bothersome if the spiders are venomous, as they can be dangerous if provoked. Additionally, spiders can damage plants and crops, which can be costly if left unchecked. Finally, spiders can also act as a vector for disease, so it is important to keep them under control in order to prevent the spread of disease.Methods of Spider Control
There are a number of methods that can be used to control spiders. One of the most effective methods is the use of chemical pesticides. Chemical pesticides are typically targeted towards specific species of spiders, and can be applied directly to areas where spiders are present. It is important to note, however, that chemical pesticides can be toxic to humans and other animals, so it is important to follow the instructions carefully. In addition to chemical pesticides, there are also a number of non-chemical methods of spider control. For example, vacuuming can be an effective method of removing spiders from an area. Additionally, sealing cracks and crevices can help to prevent spiders from entering the home. Finally, removing debris and clutter can help to reduce the number of spiders in the home.Conclusion
In conclusion, it is important to take steps to control spiders in the home. Spiders can be a nuisance if they are present in large numbers, and can also act as a vector for disease. Additionally, spiders can damage plants and crops, and can pose a danger if they are venomous. There are a number of methods of spider control, including the use of chemical pesticides, vacuuming, sealing cracks and crevices, and removing debris and clutter. By taking steps to control spiders, you can ensure that your home is safe from these pesky pests. UK Spiders. There are many different types of spiders found in the UK, but only a select few are considered common house spiders. These spiders tend to prefer living indoors where they can benefit from the shelter and protection offered by human habitation. Here are some of the most common house spiders found in the UK:-
False widow spider – Steatoda nobilis
The false widow spider is perhaps the most well-known UK house spider. This spider is easily identified by its characteristic black and red markings. The false widow spider is venomous and can deliver a painful bite, but it is not considered to be particularly dangerous.
This article provides readers with a comprehensive guide to False Widow Spiders in the UK, including identification tips, facts, and information on how to minimise the risk of encountering and being bitten by these venomous spiders.
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The Daddy Long Legs spider – Pholcus phalangioides
Daddy long legs spiders are so-named because of their extremely long legs, which can often be twice the length of their body. The Daddy long legs spiders are harmless and will not bite humans unless provoked.
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The Cellar spider
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The House spider – Tegenaria domestica
- Zebra spider – The zebra jumping spider- Salticus scenicus
Zebra spiders are named for their characteristic black and white stripes. These spiders are common in UK gardens and can be difficult to spot because they are very quick and agile. Zebra spiders are harmless to humans.
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Garden spider – Araneus diadematus
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Orb weaver spider – Araneus ventricosus
Orb weaver spiders get their name from the distinctive spiral-shaped webs they build to catch their prey. These spiders are common in UK gardens and can be identified by their reddish-brown colouring. Orb weaver spiders are harmless to humans.
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Jumping spider – Salticus scenicus
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Money spider – Linyphiidae
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Tube web spider – Segestria florentina -is the biggest European segestriidae spider
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Crab spider – Thomisus onustus
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Wolf spider – Lycosa tarantula
13.The Mouse Spider – Missulena occatoria
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The Cupboard Spider – Steatoda grossa
