You have to get pretty high in their product range before you hit £360 for a camera. The G3 Instant is probably the closest to a Ring competitor (Wifi, 2K video) and it's £78.

The £360 camera is the G5 Pro, which is a 4K camera with 3X optical zoom. I'm not aware of any Ring camera with optical zoom. If you don't need the zoom, the G6 Bullet is a 4K camera without zoom for £190, and the G5 Bullet is 2K for £126. As far as I know, Ring's highest resolution camera is 2K.

But Unifi isn't really trying to be a Ring competitor -- Ring caters to home users with little knowledge of networking, Unifi is more for small businesses (who use an integrator to install their system) or prosumers with more advanced network knowledge.