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Our Top 12 Worst Pests In London

Which are the worst pests in the capital? As pest control specialists, we’re probably the best people to answer this question. In our experience, here are the twelve worst pests you’ll find in London.

1. Rats

These pests spread disease and cause enormous amounts of damage. They breed quickly and can quickly infest properties. The biggest problems with rats is that their teeth never stop growing. This means they must continually gnaw at things and this causes widespread destruction.

2. Mice

Like rats, mice are also a problem. This is mostly because they are incontinent. Mice will urinate and defecate wherever they go about their business. Not only is this is a massive hassle to clean up, it can cause contamination to food and surfaces.

house mouse facts

3. Squirrels

Squirrels are cute and cheerful creatures, but they are not all they seem to be. They have some potentially dangerous and destructive habits. In large numbers they are considered pests and they can cause damage in the garden. Squirrels often make their way into your roof where they cause structural problems by gnawing and building nests.

4. Bed bugs

Bed bugs are some of the worst pests you’ll ever encounter. Anyone who has shared a bed with these insects will know exactly what we mean. If you see even one bed bug, you need to call us fast.

5. Flies

Flies are probably the most disgusting pests known to man. They can only feed on liquids and liquefy their food with stomach acid. This process also transfers bacteria onto the food and spreads diseases. Flies can be a particular problem for restaurants.

fly on food

6. Moths

Moths feed on natural materials like wool and silk. This means they can go through your wardrobe like a hot knife through butter. They can also become an ever increasing infestation if left.

7. Fleas

Fleas are not only a problem for your pets. They can also harass humans. Their bites are supremely irritating and can drive you up the wall. Once they take hold, they can infest your whole house.

8. Cockroaches

Cockroaches are nature’s ultimate survivors. They are almost impossible to get rid of due to their ability to live anywhere and eat anything. Luckily, we know how to exterminate these insects successfully. Our London cockroach management is very effective at eradicating these insects.

cockroach pest control

9. Wasps

Known for spoiling barbecues and picnics, these insects are extremely aggressive when they feel threatened. Many people are also allergic to their sting which makes them even more dangerous.

10. Seagulls

Seagulls nests, when made on buildings, can cause a range of problems for people. They also hang around landfill sites to see what they can scavenge – as well as bothering businesses and tourists at the seaside!

11. Pigeons

Pigeons are mainly a problem because of their corrosive faeces. This can damage paint on vehicles and brickwork on buildings. Their nests can also cause problems for people. They can easily block your gutters.

pigeons in london

12. Foxes

Urban foxes are renowned for ripping up flower beds and getting into bins. They are scavengers that go after our rubbish. A dustbin with a poorly fitting lid can provide a feast for a fox. However, the rest of the rubbish will be strewn along the pavement.


Sally has been writing on the subject of pest control for 4 years. She always carries out extensive and in depth research and always tries to bring you the most up to date, interesting topics.

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