The geographical term Severnside refers to an area adjoining or straddling the River Severn or its estuary in the United Kingdom.
The term is used by different organisations, in different contexts, to refer to quite different areas. The Severn passes through both England and Wales, in some places forming the boundary between the two. Some uses of "Severnside" relate to areas on both sides of the river, and others only to one or other side.
Read more about Severnside: Use of The Term To Cover Both Sides of The Estuary, Use of The Term Within England, Use of The Term Within Wales