Here is a quick look at the Teckin Smart Plug. A WiFi enhancement for a standard outlet turning them into Smart Sockets. This 13A plug works with both Amazon Alexa and Google Home. Useful as a mini plug wireless remote control or timer plug switch with no hub required. 

Features: (according to Amazon) 

Connection and Setting After connecting 2.4Ghz WiFi successful, and connect a device to the Smart Plug, then start your smart life. No hub required. 
Remote and Voice Control Works with Alexa and Google home, the device can be controlled via APP on smart phone remotely, or by giving a voice command. 
Schedule and Timer The device will automatically turn on/ off according to the schedule you set, facilitate your life and saving extra power consumption. 
Safe and Reasonable Design Perfectly suitable for the UK wall socket and will not block the switch. The sliding safety cover is designed to prevent electric shock. 
Quality Guaranteed If you encounter any problem or need support, please feel free to contact us through Amazon. 

Priced at £20.99 there is currently, at time of publishing, £5 off offer on Amazon here.