EE signal boosters for business premises
Calls that don’t drop and data that works, in every corner of your building. We survey, design, install and support operator-approved CEL-FI systems across the UK.
- Ofcom-compliant and legal
- Single-network or all four networks
- 4G and 5G
- Installed and supported UK-wide
Your free signal assessment
An engineer measures your building and tells you exactly what will fix it.
- EE signal, room by roomWhere it drops, and by how much.
- The best donor signalWhere the outdoor antenna should go.
- A design and a fixed quoteNo obligation, no surprises.
Why EE signal disappears indoors
EE coverage maps show the signal outside. Inside, modern buildings block most of it, so staff walk to the window to finish a call and customers can’t get through.
Thick walls and coated glass
Concrete, steel and energy-saving windows stop mobile signal getting in.
Basements and lower floors
Car parks, plant rooms and lower ground floors often have no signal at all.
Rural and edge-of-town sites
Far from the nearest mast, there is little signal to begin with.
Busy city centres
Tall neighbours and crowded masts leave dead spots, even in London.
Outdoor EE signal, brought inside
- CaptureA donor antenna on the roof picks up the strongest EE signal we measured during the survey.
- Clean and amplifyA Nextivity CEL-FI unit boosts that signal without interfering with the network or your neighbours.
- SpreadSmall indoor antennas cover every floor, so phones get full signal wherever people work.
From survey to full signal, usually in weeks
One team does the whole job, so there is one point of contact from the first call to ongoing support.
- 1SurveyWe measure EE signal inside and out.
- 2Design and quoteAntenna plan and a fixed price.
- 3InstallOur own engineers, with minimal disruption.
- 4Test and hand overWe prove the coverage before we leave.
- 5MonitorOptional 24/7 signal monitoring. Learn more
Only legal boosters
Many boosters sold online are illegal in the UK and can disrupt the network for everyone nearby. We install only Ofcom-compliant, operator-approved systems.
EE signal before and after our installations
We survey every building before and after installation with our own survey app. These are real EE readings from recent projects.
Average signal strength (RSRP) across each surveyed floor. Usable means better than −107 dBm, the level phones need for reliable calls over 4G.
Recent EE projects
EE signal boosters: common questions
Are EE signal boosters legal in the UK?
Yes, if they meet Ofcom’s rules. Since the Wireless Telegraphy (Mobile Repeater) (Exemption) Regulations 2018, approved single-network boosters can be used without a licence. Multi-network systems need the networks’ consent, which we arrange. Unapproved boosters bought online are illegal, and Ofcom can act against anyone using one.
Will a booster work if there is no EE signal outside?
A booster needs some outdoor signal to work with. The survey finds the strongest EE signal around your building. If there is none, we will tell you and suggest the alternatives.
Does it boost 5G as well as 4G?
Yes, with the right system. The survey shows which EE 4G and 5G bands reach your building, and we recommend CEL-FI equipment that carries them.
Can it cover O2, Vodafone and Three too?
Yes. A multi-network CEL-FI QUATRA system covers all four UK networks, so visitors and staff on any network get signal.
How long does installation take?
It depends on the size of the building. The quote includes an installation plan, and large sites such as hospitals are done in phases to avoid disruption.
Other networks
EE boosters for your building
Ready for full EE signal?
Book a free signal assessment and get a design and fixed quote.