I am the one who is running the Amiga Reviews
site. When I started it six years ago, I tried to contact the authors of the original reviews verifying their opinion about the initiative. I only managed to trace a few of them - mainly people who have worked for Zzap! and a freelance journalist. They had no objections about it.
Since then, I assume the original author has no problems with the HTML-ised review as long his/her name is mentioned.
Selling/publishing scans or PDFs on a site is another matter, it appears.
It seems Future Publishing (publisher of Amiga Format, Amiga Power, Amiga Shopper) ordered site zzap64.co.uk to withdraw their Amiga Format scans from the site-shop.