You might try our Hertfordshire SMR officer Alison Tinniswood, Archaeology
Section, Environment, Hertfordshire County Council, County Hall, Hertford,
SG13 8DN ([log in to unmask] (01992 555245)).
The Hertfordshire Archaeological Trust, Seed Warehouse, Maidenhead Yard,
Hertford, SG14 1FX (01992 558170) may have been the unit responsible for any
work on the site, however, they are not always the most helpful of people,