Why Home Networks Fail in London Homes
London has a particular set of challenges for home networks. Victorian and Edwardian terraced houses have thick brick walls that Wi-Fi signals struggle to penetrate. Houses converted into flats have plasterboard, concrete and metalwork that block signals in ways that are hard to predict. And BT and Virgin router placement — usually by the front door where the cable enters — is rarely the best position for the actual living spaces.
The result is most North London homes have good Wi-Fi in two or three rooms and weak signal everywhere else. The fix is usually straightforward once you know what's causing it.
Step 1: Identify Your Problem
Before buying anything, understand what you're dealing with. Do a speed test on your phone in different rooms using Speedtest.net. Note where signal drops. If you get full speed near the router but it drops to almost nothing two rooms away, you have a coverage problem. If speed is poor everywhere, you may have an ISP issue or a router that needs replacing.
Step 2: Optimise Your Router Position
The router should be as central as possible in your home — not at the front door where the cable enters. Even moving a router from one room to another can dramatically improve coverage. Place it at height (shelves, not floor level), away from other electronics and thick masonry, and ideally not inside a cupboard. This costs nothing and often solves 50% of coverage problems.
Step 3: Decide Between Powerline Adapters, Mesh, or Wired
Powerline Adapters (from £40-80)
Powerline adapters send your internet signal through your home's electrical wiring. You plug one into a socket near the router, one in the room where you need better signal, and they create a network connection through the walls. They work well in most homes and are far cheaper than mesh systems. Not ideal for older homes with wiring on multiple circuits.
Mesh Wi-Fi Systems (from £80-300)
Mesh systems (BT Whole Home, Google Nest WiFi, Eero) use multiple access points that communicate with each other to provide seamless whole-home coverage. They're the most reliable solution for larger homes and properties where walls cause significant signal drop. The devices are easy to place and the apps make setup straightforward.
Wired Ethernet (best performance)
For a desktop computer, smart TV, games console or work-from-home setup, a wired ethernet connection always outperforms Wi-Fi. Running ethernet cable through walls or under floors is more involved but provides a connection that never drops and delivers full internet speeds regardless of Wi-Fi interference.
For London Flats and Conversions
Converted flats in older buildings often have unusual layouts where signal simply cannot penetrate certain walls — sometimes due to metalwork in the original structure. In these cases, powerline adapters or a carefully placed mesh node are usually the answer. The key is identifying exactly which barrier is blocking the signal before buying equipment.
Securing Your Network
Change your router's default password (not just the Wi-Fi password — the admin login). Use WPA3 encryption if your router supports it. Create a guest network for visitors and smart home devices. These steps take ten minutes and significantly improve your network's security.
When to Call a Professional
If you want ethernet cable run through walls or floors, if you have a large or multi-floor property that needs a properly designed network, or if you've tried the above and still have persistent problems — a professional can assess your specific situation and recommend the right solution. Fix-It Handyman provides home network setup and IT support across North London. Get in touch for a free assessment.