The Party Wall etc. Act 1996 requires that notice be given to neighbouring owners. It is a legal duty for a building owner to serve the appropriate notices in the correct manner. Failure to do so could resist in an injunction being sort to stop the works.
Notices can be served in person or via the postal system but in order to be valid all notices must contain the following information:
Name and address of Building Owners
Nature and particulars of proposed work
Date on which the work will begin
Although not a requirement to name adjoining owners a land registry search can be fruitful in finding these details, if details can’t be found it is possible to serve upon “The Owners” although in this case you must deliver this in person either through the door or attached to the property, evidence of such delivery would be prudent