Next Door is a company that creates neighbourhood websites enabling people living in the same area to communicate with each other about matters of local interest (items lost/found, need to borrow a tool, some materials surplus to requirement ….)
The website address is https://nextdoor.co.uk.
You cannot see the material without first registering. Registration requires that you give a digital contact number or you request a postcard with your verification number.
A number of people locally are already using the website so you may find it of interest.