Dear All Does anyone know whether OS parcel numbers are fixed in stone or do they change over time? I am writing an SMR manual and I need to know whether/how to record them and how to treat the records we already have. Cheers Tim ++++++++++++++++++++++++++++++++++++++++++++ Tim Grubb - SMR Officer Gloucestershire County Council Archaeology Service Environment Dept. Shire Hall Gloucester GL1 2TH Tel: (01452) 425705 Fax: (01452) 425356 Email: [log in to unmask] Web: http://www.gloscc.gov.uk/archaeology/ ++++++++++++++++++++++++++++++++++++++++++++