By the Smart Home UK – Home Automation Reviews, Guides & Deals Team · Updated May 2026 · Independent, reader-supported

Cheapest Way to Automate a UK Home on a Budget – Under £150 Guide

Automating your home doesn't require thousands of pounds or a sprawling ecosystem of premium devices. A functioning smart home setup for under £150 is genuinely achievable in the UK—I've built one, tested it, and refined the approach. This guide shows you exactly which products to buy, how to wire them together, and what compromises you're making.

Why These Three Products?

The combination of Echo Dot, TP-Link Tapo smart plugs, and WiZ smart bulbs sits at a sweet spot: each category solves a real problem, the three systems communicate seamlessly via Amazon Alexa, and none of them require a separate hub. You're not paying for redundancy, and you're avoiding the brands that demand proprietary apps or subscription fees.

The alternative paths all have friction. Cheap WiFi-only smart bulbs from no-name sellers disconnect constantly. Standalone smart plugs without a voice assistant mean opening an app every time you want to control something. Budget hubs require fiddling with Zigbee or Z-Wave frequencies. This trio just works.

The Hub: Echo Dot (4th or 5th Gen)

Start with an Echo Dot. It's the cheapest Alexa device and the backbone of this setup. You'll find the 4th generation for £35–40 and the 5th generation for £45–50 on Amazon UK. The 5th gen has a better speaker and a temperature sensor; the 4th gen does everything else identically. Either works fine.

The Dot isn't a "nice to have"—it's essential. It's your voice interface, your automation engine, and the gateway that ties everything together. Set it up in a central location in your home: a kitchen shelf, living room, or hallway. You'll use voice commands more than you expect ("Alexa, turn on the lounge light"), and it halves the need to unlock your phone.

Place it away from noise (not above the kettle) and away from interference (not next to the microwave). Once it's online and registered to your Amazon account, the Dot automatically becomes the Alexa hub for your home network.

Smart Plugs: TP-Link Tapo P100

TP-Link's Tapo P100 plugs are the workhorse. At £8–10 per plug, you can afford four or five of them. They're compact, so they won't block the socket above or below; they measure power draw in real-time; they're rated for 13A; and they integrate flawlessly with Alexa.

Plug them into:

• The socket behind your TV or computer tower (turn everything off together with one command)
• A desk lamp or fan (control something that wasn't smart before)
• A heater or kettle (schedule it or control it remotely)
• A phone charger or router (the power monitoring helps you spot devices left on)

Add each Tapo plug to your WiFi via the Tapo app (they support 2.4GHz networks), then link the Tapo app to Alexa. Within moments, the plugs appear in Alexa and you can control them by voice or app. No second hub needed.

Smart Bulbs: WiZ Connected

WiZ bulbs cost £5–8 per bulb—genuinely the cheapest colour smart bulbs in the UK that actually stay connected. They work in any standard bulb socket, they support 16 million colours, they dim to 10% brightness, and they respond to Alexa commands. The main trade-off: they're WiFi-only (no Zigbee backup), so a router failure affects them, but that's rare.

Replace bulbs in your:

• Bedside lamp (dim them on a schedule or via voice)
• Lounge or kitchen main light (colour scenes for different times of day)
• Any other lamp you use regularly

Add them via the WiZ app, then link to Alexa. They appear immediately in the Alexa app.

What Automation Actually Looks Like

You're now controlling lights and plugs from Alexa. The real value emerges when you string actions together:

• Morning routine: "Alexa, good morning" triggers the bedside lamp to brighten gradually, the coffee-maker plug to turn on, and a news briefing to play.
• Movie time: One command dims the lounge lights to 20%, turns on the TV via the plug, and sets the Tapo plug controlling the side lamp to a warm colour.
• Away mode: Ask Alexa to "turn on away mode" and all lights turn off, plugs switch off, and any sunset-to-sunrise automation pauses.
• Scheduled automation: The lounge light turns on at 6 PM on weekdays, the heater plug activates 30 minutes before you wake on winter mornings.

Alexa Routines are your lever here. They're free, they're visual to set up in the Alexa app, and they require no coding knowledge.

The Honest Constraints

This setup has real limits. WiZ bulbs depend on your WiFi—if your router is unreliable, so are they. Tapo plugs don't offer scheduling without Alexa (the Tapo app is purely manual control). You can't do complex conditional automations ("if it's raining and nobody's home, close the smart blinds")—Alexa Routines are simpler than that.

You're also locked into Amazon's ecosystem. If you later buy a Philips Hue or Eve product, integration exists but isn't as seamless. Voice control is Alexa-only.

These aren't deal-breakers for a £150 budget setup. They're the price of admission.

Your Next Steps

Add the Echo Dot first. Let your home network stabilize with one new device. Then add two Tapo plugs—pick devices you use every day. Finally, swap bulbs in two frequently-used lights. Test automations at each stage.

This isn't a complete smart home. It's a real one, under budget, and it actually solves the problem: less walking to switches, more control without a phone in your hand.