TV and Streaming Data Cabling Guide¶
Hardwire your TV and streaming devices for reliable 4K and 8K streaming without WiFi buffering. This guide covers behind-TV wiring, wall plate installation, HDMI over IP, and UK-specific installation considerations.
Why Wired Beats Wireless for TV Streaming¶
Streaming 4K video requires 25-50Mbps sustained bandwidth per stream. WiFi in UK homes typically delivers 30-60% of the router speed at the TV position due to wall interference from brick and block construction. A Cat6 wired connection provides full gigabit bandwidth with zero packet loss regardless of walls or distance within 55m. For 4K streaming one wired data point per TV is sufficient. For 8K (coming to UK broadcasters by 2028) or multiple simultaneous streams install two data points per TV. The second port supports HDMI over IP extenders for distributing Sky Q, Virgin Media, or games consoles to other rooms. Behind the TV install a twin-gang faceplate with two keystone jacks. Use a short 0.5m patch lead from the wall plate to the TV Ethernet port. For smart TVs with 100Mbps Ethernet ports (common on 2022-2024 models) wired is still superior to WiFi due to stability. LG, Samsung, and Sony TVs all have gigabit Ethernet on 2025+ models. Cost for one TV data point DIY: £30-£60. Professional: £100-£200 per point.
Behind-the-TV Wiring and Wall Plate Installation¶
Step 1: Identify the TV position and measure to the central network location. Step 2: Mark faceplate position behind the TV at 1400-1600mm from floor (behind centre of TV). Step 3: Run Cat6 cable from central point to TV position with 2m service loop at the TV end. Step 4: Install a twin-gang brushed wall plate for clean cable exit. Brush plates allow cables to pass through while maintaining a tidy appearance. Step 5: Terminate at both ends and test. Step 6: Use a 0.5m Cat6 patch lead from wall plate to TV. For wall mounted TVs run cable through the wall cavity to a brush plate at skirting level then behind the TV. Use right-angle HDMI adapters (£8-£12 from Amazon UK) to allow the TV to sit flush on a fixed mount. For Sky Q and Virgin Media boxes install a separate data point as these boxes have their own Ethernet ports. For HDMI over IP installations (using devices like HDANYWHERE £300-£600) each transmitter needs a wired connection to the network switch. Ceiling-mounted projectors need data point at ceiling level with Cat6 cable from the central point.
Specifications and Comparison¶
| Streaming Setup | Data Points | Cable | Bandwidth Needed | UK Service Example |
|---|---|---|---|---|
| Single 4K TV | 1 | Cat6 | 25Mbps | Netflix, BBC iPlayer |
| Multi-room 4K | 2-3 | Cat6 | 50-75Mbps | Sky Stream, Virgin 360 |
| 8K TV (future) | 2 | Cat6a | 100Mbps | Future UK broadcasts |
| HDMI over IP | 2-4 | Cat6a | 1Gbps per stream | HDANYWHERE, Just Add Power |
| Home cinema | 3-4 | Cat6a | 1Gbps per device | Apple TV 4K, Nvidia Shield |
FAQ¶
- Is wired Ethernet better than WiFi for TV streaming?
- Yes, wired Ethernet provides consistent bandwidth with zero packet loss or interference. UK brick and block walls significantly reduce WiFi performance. Wired also frees WiFi bandwidth for portable devices.
- What Cat6 cable do I need for behind-TV wiring?
- Standard UTP Cat6 is sufficient for TV use. Use solid core cable for in-wall installation and terminate on keystone jacks. Pre-terminated patch leads should not be run inside walls as the plug ends can fail over time.
- Do I need a data point for each TV in my home?
- Yes, each TV should have its own wired data point. Smart features, streaming apps, and software updates all work better on wired connections. Multi-room systems like Sky Stream need wired backhaul for reliability.
- Can I run HDMI over IP alongside TV data?
- Yes, install two data points per TV position. One for the TV Ethernet and one for the HDMI over IP transmitter/receiver. Use a separate VLAN for AV traffic if using a managed network switch.
- What is the best wall plate for behind-TV connections?
- A twin-gang brushed TV plate with two keystone openings or a combined TV faceplate with coax and Ethernet. Screwfix single brushed TV plate costs £8. Dual data plus coax faceplate costs £15. For more information see our Whole-Home Structured Cabling Design.
Last updated: 2026-05-31.
Related Guides¶
External Resources¶
For further information consult authority guidelines at the National Security Inspectorate.