Nalati (efamily cloud) Smart Plug, 3 pack. Alexa compatable – £15.99 Prime / +£4.49 non Prime Sold by Yihaitong and Fulfilled by Amazon
These seem to always be branded with a different name, but they are the same and they use the Efamily Cloud app, but also compatible with Amazon Echo devices.
The ones I have I’ve used for years without much problem. Their main issue for me is that I have to re-pair them occasionally if I unplug them or we have a power cut. So yes they’re perhaps not the best plugs available, but for just over £5 each they’ll be fine for turning the light of my fish tank on and off.