Filing
Yes, listed companies (IIRC) have to publish their accounts each year. Most listed companies publish this information on their websites, and there are plenty of sites offering this information - Fool.co.uk springs to mind. I think Yahoo Finance also does this. Try Google - there are probably hundreds of sites that'll try and bait you in with this info. You'll see their advertising while you're there, so it's money for nothing from their point of view.
Steve
Darksider