Your local council is the official body responsible for scheduled monuments in their area, so that should normally be your first point of contact if you have any queries related to a specific monument. If you get in touch via their main telephone number or email address then they will be able to pass your query on to the relevent department.
You can find out which local authority is responsible for scheduled monuments at www.gov.uk/find-local-council.
For queries about the content of the website, contact 'admin{at}ancientmonuments.uk' (making the obvious substitution to turn that into a valid email address).
For link exchange requests or offers of commercial services, contact 'uce{at}ancientmonuments.uk' (making the obvious substitution to turn that into a valid email address).
Please see the Errors and Corrections page before sending any email about errors on the site.