Here in Herts we don't regard DBAs or EIAs as events in themselves, as they are compilations, using secondary sources. If in the process some geophysics is done, or someone goes out and has a look at the surviving buildings, or whatever, these activities are, of course, events and can (and should) be treated as such. It's always worked, so far. Isobel Dr Isobel Thompson Historic Environment Record HCC ****Disclaimer**** The information in this message should be regarded as confidential and is intended for the addressee only unless explicitly stated. If you have received this message in error it must be deleted and the sender notified. The views expressed in this message are personal and not necessarily those of Hertfordshire County Council unless explicitly stated. Please be aware that emails sent to or received from Hertfordshire County Council may be intercepted and read by the council. Interception will only occur to ensure compliance with council policies or procedures or regulatory obligations, to prevent or deter crime, or for the purposes of essential maintenance or support of the email system.