They could have been non-copyrighted at the time. Database rights didn't apply in the UK until 1998, so I think it would be fine to have an intern type in just the words into the computer and not infringe on anything.

The list was used with permission.

I don't know/remember the terms under which this happened. I do remember that when I was trimming it down I found the list contained the trademarks of a competitor. These were removed.