If someone uses my voice in a video without my permission would that allow me to file a copyright complaint against the video under the copyright law within the UK?

Probably. You own your voice 100% so if someone steals it then maybe?
No it doesn't.
Start singing in the middle then call it a song.
It probably comes under something, but not copyright. Anyway, I'm sure it's only trivial, so just request that your voice be removed from said video.
Audio is like a theme song or music, if voices were copyrighted half of TV would probably be sued.
Are you singing? That might make a difference but it's not actual copyright but singers on recording have rights. They should have asked your permission to use it though. All people appearing in a video should give their consent to being used and sign a release form. I am surprised Misawa didn't know this given his profession. You would really have to tell us a bit more though. It is professional, youtube etc etc.
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