2K vs 4K Security Cameras UK | Is 2K or 4K Better for CCTV | Which is Better 3K or 4K Security Camera | 2K 4K Resolution CCTV South London

If you’ve been researching security cameras near me in South London, you’ve probably come across the terms 2K, 3K and 4K — and wondered what the difference actually means for you. This guide cuts through the technical jargon and gives you a straight answer based on what we install every day across Wandsworth, Lambeth, Croydon and Southwark.

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These numbers refer to the resolution of the camera — essentially how many pixels the image contains and how much detail it captures:

2K (1080p / Full HD) — 2 megapixels. This was the standard for home security cameras until a few years ago. Still functional but increasingly considered outdated for a professionally installed system in 2025.

3K — 3 megapixels. This is the resolution of our wireless Hiseeu PTZ cameras — the Basic Package from £700. A significant step up from 2K, with noticeably sharper detail on faces, number plates and entrances.

4K (8 megapixels) — this is the resolution of our wired Hikvision dome cameras — the Standard Package from £900. Four times the detail of a standard 1080p camera. Faces are clearly identifiable at distance, number plates are readable, and colour night vision footage is genuinely usable as evidence.

Yes — and it’s most obvious in two situations:

At distance — a 2K camera covering a long driveway or wide garden will capture a blurry shape at 15 metres. A 4K camera captures a clear face and readable clothing at the same distance. For South London terraced houses with long rear gardens or wide front approaches — this difference is significant.

At night — 4K cameras with colour night vision (ColorVu) capture full colour footage in near-total darkness. 2K cameras typically switch to black and white infrared mode — grainy, lower contrast, less useful as evidence. If someone approaches your property at 2am — you want colour footage, not a grey silhouette.

For number plates — 4K is the minimum recommended resolution for reliable number plate capture on a driveway or street-facing camera. 2K often captures plates but loses detail at speed or distance.

For most South London homeowners the honest answer is: 4K if you can, 3K if your property suits wireless.

Choose 3K wireless (Basic Package from £700) if:

• You live in a flat or period conversion where cable routing is difficult
• You rent and cannot drill through walls
• You need a quick installation with minimal disruption
• Your property is smaller and cameras are closer to the areas you’re covering

Choose 4K wired (Standard Package from £900) if:

• You own a house and want maximum long-term reliability
• You have a driveway, long garden or wide exterior to cover
• You want the clearest possible footage for evidence purposes
• You want colour night vision as standard

Both systems include remote monitoring via smartphone, motion detection alerts and DVR/NVR recording — the resolution is the main practical difference for most homeowners.

Not automatically — but in practice yes. Our 4K Hikvision cameras use ColorVu technology which captures full colour footage in very low light — down to 0.0005 lux. This means a dark driveway or unlit rear garden is captured in full colour rather than black and white infrared.

Our 3K Hiseeu cameras also have colour night vision capability — making them a significant upgrade over older 1080p systems which produce grainy black and white footage at night.

If night vision quality is your priority — and for most South London homeowners it should be, given that most opportunistic crime happens between 10pm and 4am — both our systems deliver usable colour footage. The 4K Hikvision system delivers sharper detail at greater distances in the same conditions.

For a typical South London terraced house — 3K is sufficient for most applications, 4K is the professional standard. Here’s a quick guide:

• Flat or small property, cameras within 5 metres → 3K wireless is perfectly adequate
• Terraced house, standard driveway and garden → 3K or 4K depending on budget
• Larger property, long driveway, wide exterior → 4K wired recommended
• Commercial premises, loss prevention, number plate capture → 4K wired as minimum

If you’re unsure which resolution is right for your property — our engineers assess this during a free site survey and recommend the right system for your specific layout. No obligation, no pressure.

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• Installation Packages — 3K wireless from £700, 4K wired from £900
• Our Services — see how we design your security system
• Home Security Installation across South London
• Remote Monitoring — included with every installation
• Can Security Cameras Work Without Wi-Fi? — wired vs wireless explained
• CCTV Installation Blog & FAQ — guides, costs and advice for South London homeowners

Wondering whether 2K or 4K security cameras are better for your home in the UK? CCTVcam provides professional security camera installation across South London — wired Hikvision 4K systems from £900 and wireless Hiseeu 3K systems from £700, both fully installed with no monthly fees. Whether you searched is 2K or 4K better for security cameras, which is better 3K or 4K CCTV, 4K security camera installer near me or best resolution security cameras South London — our engineers cover all SW, SE, CR and TW postcodes with fast response and clean installation. Free site survey — no obligation.