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Wi-Fi site surveys in London
Ekahau surveys for London offices, older buildings, warehouses, hotels and venues. We measure what's really happening, design to written thresholds, and our own teams can install and prove it.

Why London buildings need a proper survey
London Wi-Fi problems are rarely about the access points. They're about the building and everything around it:
- Crowded airwaves. In a City or West End office you can see dozens of neighbouring networks from your desk. A survey measures channel overlap and interference, so the design avoids it rather than adding to it.
- Older and listed buildings. Thick walls, basements, lightwells and protected ceilings change how signal travels, and limit where cable can go. We survey first so access point positions work with the building, not against it.
- Glass and steel. Modern floors with coated glass, lift cores and steel risers create dead spots that a floor plan won't show.
- Mixed tenants and serviced space. Shared risers and landlord rules mean the design has to fit what the building will allow.
What a London survey involves
- Scope call and floor plans. We confirm areas, user numbers, devices and any problem spots. Use our pre-survey questionnaire.
- Access arranged around you. Early starts, evenings or weekends where the building needs it. We work with building management, reception and security passes.
- On-site measurement with Ekahau Sidekick and Ekahau Site Survey Pro: signal, signal-to-noise, interference, channel use and roaming, floor by floor.
- Cabling and containment check at the same visit. We're an electrical contractor as well, so we note cable routes, containment, comms room space and power for every proposed access point.
- Report and design. Heatmaps, findings in plain English, proposed access point positions and a priced plan. See what you get.
Building types we survey in London
- Offices and serviced floors
- Warehouses and industrial units
- Hotels, restaurants and venues
- Schools and colleges
- Residential blocks and managed property
- Buildings linked by point-to-point wireless
Survey, then install, then prove it
Many survey firms hand you a report and leave. We can carry the job through: design, structured cabling, installation and a validation survey after go-live against the thresholds we agreed. If you'd rather use your own installer, the report is written so they can work to it.
Areas
All of Greater London, including the City, Westminster, Camden, Islington, Southwark, Tower Hamlets and Canary Wharf, Hammersmith, Wandsworth, and out to the M25. Our office is in St Albans, just north of London.
Common questions
How much does a Wi-Fi survey in London cost?
It depends on floor area, number of floors and the type of survey. See what a survey costs for how we price, or send floor plans for a fixed quote.
Can you survey out of hours?
Yes. Many London surveys are done early morning, evening or at weekends so the office isn't disrupted.
Predictive or on-site?
For a new fit-out, a predictive survey from drawings gets you a design and budget. For an occupied building, or where problems already exist, measure on site. Many jobs use both.
Do you need access to the comms room?
Ideally yes. We check switch ports, power and cable routes so the design can actually be installed.
Can you survey several London offices?
Yes. See multi-site survey programmes.
Let's find out what your Wi-Fi is actually doing.
Book a survey and you get measured data, a design you can build to, and a number you can budget against — not an opinion.
Our cabling, containment and power are installed under the group's accreditations — NICEIC, Constructionline Gold, CHAS and SafeContractor, held by The Specialist Electrical Group Ltd.
Talk to SEGwifi
Tell us about the building and what is going wrong. We will come back within one working day with the survey that answers it — or tell you that you do not need one.