UK homes — particularly older Victorian and Edwardian terraces with thick plaster walls, solid interior partitions and multiple floors — present real challenges for wireless coverage. The default router position most ISPs suggest (near the phone socket, usually in a hallway or under-stairs cupboard) is frequently the worst possible location for whole-home coverage. Improving the situation often starts with moving the router before considering any additional hardware.
| Problem | Most likely cause | First step before buying anything |
|---|---|---|
| Dead spot in specific room | Walls, floors or distance blocking signal | Move router to a more central position |
| Slow speeds throughout | ISP issue, router congestion, or channel interference | Run a speed test directly connected via ethernet; compare with Wi-Fi |
| Drops in speed during evenings | Network congestion (your ISP, not your home) | Run speed test at off-peak time to confirm |
| Multiple devices causing slowdown | Bandwidth saturation or old router limits | Check how many devices are connected; disconnect idle ones |
| Garden or outbuilding coverage | Distance and building materials | Powerline adapters often outperform Wi-Fi extenders for fixed locations |
Router placement: the free fix most people skip
Wi-Fi signal travels in all directions from the router and is absorbed by walls, floors and ceilings. A router placed in a ground-floor hallway in a three-bedroom house will typically struggle to reach the top floor and rear rooms adequately. Moving the router to a central position on the first floor — even if it means a longer ethernet cable from the master socket — can dramatically improve coverage throughout the building. Elevation also helps: a router on a shelf or desk outperforms one on the floor, where signal is immediately absorbed downwards.
2.4GHz vs 5GHz: which band you're using matters
Modern routers broadcast on two frequency bands. The 2.4GHz band carries signal further and penetrates walls better but offers lower maximum speeds and is more susceptible to interference from neighbouring networks and household devices (microwaves, baby monitors, cordless phones). The 5GHz band is faster and less congested but has a shorter effective range. For devices used close to the router, connecting to 5GHz improves performance; for devices at range, 2.4GHz is usually more reliable.
Before buying a Wi-Fi extender or mesh system
- Move your router to the most central, elevated position available.
- Run a speed test via ethernet directly into the router — this tells you whether the problem is your broadband line or your Wi-Fi.
- Check which band your devices are connected to; reconnecting to the appropriate band often solves slow-speed complaints.
- Restart your router — many ISP-supplied routers benefit from a weekly restart to clear connection tables.
- For a single remote room or outbuilding, a powerline adapter (over your electrical wiring) is usually more reliable than a Wi-Fi extender.
When additional hardware is actually necessary
If the router is already well-positioned and the issue is genuine multi-floor or multi-room coverage in a larger property, a mesh Wi-Fi system — where multiple nodes work together as a single network — is currently the most reliable solution for most UK homes. Unlike Wi-Fi extenders (which create a separate, weaker network and require manual device switching), mesh systems maintain a single network name and handle device handover automatically. Entry-level mesh systems from major brands start at around £100–£150 for a two-unit kit.