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Over the past 15 years, Slough has quietly become one of the most important digital hubs in Europe. Many people don’t realise it, but the Slough Trading Estate now hosts more than 30 data centres, making it the largest cluster of its kind in Europe.

These buildings don’t look exciting from the outside — usually large, windowless, and very secure — but inside they house the computer systems that keep modern life running.

💡 What is a data centre?

A data centre is a highly secure building full of powerful computers that:

• store our photos, emails and documents
• run online banking
• support NHS systems
• power streaming services
• handle business and government data
• support artificial intelligence and cloud computing

If the internet is the “digital world”, data centres are the engine rooms.

📍 Why Slough?

Slough has become a hotspot for several reasons:

• Close to London but with more space
• Excellent fibre‑optic connections
• Strong electricity infrastructure
• The Slough Trading Estate, which offered fast‑track planning for tech companies
• A large local workforce with engineering and construction skills

This combination made Slough the perfect place for companies like Amazon Web Services, Microsoft, and major financial institutions to build their digital infrastructure.

📈 How big is the Slough cluster?

Recent reports show:

• 30+ data centres in and around Slough - numbers growing rapidly.
• Around 1 gigawatt of total power capacity (very large by UK standards)
• One of the fastest‑growing tech zones in the country
• A major part of the UK’s critical national infrastructure

Slough is now considered the UK’s AI Growth Zone, supporting the rapid expansion of artificial intelligence services.

👷 Economic impact on Slough

The growth of data centres has brought significant benefits:

Jobs

• Around 14,000 jobs supported across construction, engineering, security, maintenance and support services
• Thousands of additional jobs created during the building phase

Local income

• Over £30 million per year in business rates
• £18 million raised through Slough’s special planning zone over the last decade

Regeneration

Data centres have helped replace the old manufacturing jobs that disappeared in the 1990s and 2000s, giving Slough a new economic identity.

🌱 Environmental considerations

Data centres use a lot of electricity, but operators in Slough have made progress:

• Around 95% of energy is now backed by renewable sources
• Newer centres use advanced cooling systems to reduce energy waste
• Many companies are investing in greener technologies

It’s still a challenge, but the industry is moving in the right direction.

🏛 Why it matters to all of us

Even if we never step inside one, data centres affect our daily lives:

• They keep essential services running
• They support local jobs
• They bring investment into Slough
• They help power the digital tools we all use — from online shopping to video calls

Slough’s data‑centre cluster is now a national asset, and one of the town’s biggest success stories of the 21st century.