Copyright Authority Ltd

I got a letter and application form from the Copyright Authority asking if I wanted to join because I might have payments due. I am trying to figure out who might have copied something and declared it to CAL. The only academic thing it could be would be my honours thesis, In The Shadow of BHP: Newbold General Refractories. Everything else is SCA related and very unlikely to be declared. I am tempted to join just to see what it might be. But I am going to check with my sister first, because she used to work there so she might have a better idea of what is going on.