Err just a thought, given that I'm half way through converting my entire DVD collection. Where do I stand in that regard for converting my DVD's for watching on a PDA as they arent available in this format? 
Strictly speaking it is still illegal. Copying copyright material is prohibited for whatever reason you do it in the UK.
But... Realistically speaking, if you are copying for your own use and not spreading them around, then there is no one to care and no one knows anything in order to shop you.
There is a massive body of opinion in the EU court system to legalise personal use copying for different media carriers and backup purposes as it is a victimless 'crime'.