
Did you tell the neighbour why you wanted to find them ?? if you did they probably dont want to get involved. If no luck then try other neighbours
if the neighbour knows thier new address then I would find a friend who has the confidence to knock and pretend the have a important parcel or something which they need to deliver do they know thier new address ..they might fall for it .
But You will have to leave it for a good few days or they may get suspicious.
or if you can afford it get a P det to find them for you they have ways and means.
here is some advice...Difficulty: Moderately Challenging
Instructions.1
Write the individual's name and previous address on a blank envelope. Fill out the envelope as normal, including your return address and a stamp. Write the phrase "Address Correction Requested" prominently on the front of the envelope. This will tell the post office to affix a label containing the individual's new address on the envelope and send it back to you.
2
Access the public records database for any professional license the individual may have. Lawyers, CPAs, notaries, real estate agents and other professionals all have licensing agencies with which they must keep an accurate, current address. Consult the organization with which the individual is licensed and look up the individual by name.
3
Use a reverse phone lookup tool (see Resources) and enter the individual's area code and phone number. These tools will search through phone directories and attempt to find an address associated with the telephone number. If that doesn't work, there are other online methods you can try, including social networking sites and using a search engine.
4
Contact relatives or old neighbors if you have their information and ask if the individual you are looking for left any forwarding address.
5
Hire a professional people finder agency. While these services can be pricey, they have access to techniques and tools that you do not. Additionally, their experience can be invaluable in finding someone you cannot locate on your own.
.192.com Address Finderwww.192.com/Address_Finder
Find any name & address in the UK with free search and preview.
Southern Uk AddressMaps.alot.com
Find Any Address In The UK! It's Fast & Easy w/the Free Maps Toolbar
Yell.com - Phone NumbersYell.com
Free Business Number Search From the Official UK Yellow Pages(TM)
Ads by GoogleTips & Warnings
The Internet has numerous methods to find someone, including social networking sites, online directories and even simple search engine queries..While it is not illegal to attempt to find someone, excessive attempts--especially if the individual relocated to escape you--will be considered criminal stalking. You should attempt to find someone only if you are sure that they will be happy to have you find them. Looking for someone who does not want to be found will be considered an invasion of privacy..References
Peoples Law: Finding People
Skip Ease: How To Find Someone Online - People Search Tips
United States Postal Service: Address Correction, Address Change, FASTforward, and Return Services