2026-09-28T08:45:49+01:00https://marinefinds.org.uk/datalabs/terminology/object/format/jsonhttps://marinefinds.org.uk/datalabs/terminology/object/format/xmlhttps://marinefinds.org.uk/datalabs/terminology/object10006102683SUB REGIONAL SEAT OF GOVERNMENTYA structure, often sited underground, from where it was intended to conduct the business of government in the event of nuclear war. Sub RSGs were introduced between the RSGs and local authorities to allow the RSGs to focus on strategic direction.1P