>>>Can you find a reverse phone book on the Net ?
Reverse phone directories are illegal in the UK. Anyone offering such a service faces up to 10 years in prison.
192.com only lists people who've not indicated that they want to be excluded from the 'edited' electoral roll, so there's no certainty of finding them listed there.
Assuming that the relevant person is entitled to vote in the UK, and that they've met with the legal requirement to register as an elector, their name will however appear on the full electoral roll. That's not available to the general public in any electronic form though. (Only the police, security services and credit reference agencies have such access). You need to visit the relevant local council office to view the paper version.