Hi welcome to Ukaps
At present I dont think you can get them from uk sellers. I brought mine from AliExpress and they were shipped from china. I purchased two of their flagship model a430 pros which look similar to the solar rgb from ADA. Even with the custom tax I paid less then buying two chihiros vivid lights.
At first the app was terrible but with a lot of hard pressing from members of the ukaps community
@Hanuman they listened and massively improved the apps functionality and stability. I personally love the lights and they have amazing build quality. The colour rendition is top notch and I can grow any plants I feel like. The newer models come with the Bluetooth 3.0 module which gives gentle ramp up and ramp down feature.
They make a wide variety of lights, i dont know them off by heart I'm afraid but I'm sure you could find a light that matches what you need. As a new light manufacturer you expect some hiccups but so far I cant knock them as i've had no bad experiences other then occasionally not being able to connect to one of the lights via app but a quick restart of the app fixes it every time.
If you look for good lights at a good price or looking to save a few quid I would definitely look into week aqua. Have a browse on AliExpress you'll find plenty of sellers. Hope this helps.