Even if used on the unlicensed bands it’s still illegal to transmit in those frequencies without a license as the UV5R doesn’t comply with the restrictions of license free radios. I.e it exceeds the max allowed power and has a detachable antenna.

However, there’s nothing illegal about using the uv5r to receive. And in reality if you only use it on the pmr446 frequencies you’re very unlikely to get busted.