The acquisition of Switchboard by Infospace should accelerate consolidation across multiple modalities of the Yellow and White Pages.
There are two sites which claim to provide a UK White Pages but they are of doubtful provenance and not to be recommended.
There's a Yellow Pages section as well as a White Pages one.
One popular selection is the Acoustic Guitar Tab White Pages with over 150 songs from all genres.
There are many services online that allow you to do reverse phone lookups and these are usually the same organizations that provide you with your local white pages and yellow pages.