Ok, found the answer - the OBJECT owner must be changed to DBO, negating the need to prefix references to your object in your SQL scripts/queries - the object in this case being the database table(s)
Here is a script that will change the owner for objects within a database (not my own code)
DECLARE @currentObject nvarchar(517)
DECLARE @qualifiedObject nvarchar(517)
DECLARE @currentOwner varchar(50)
DECLARE @newOwner varchar(50)
SET @currentOwner = 'old_owner'
SET @newOwner = 'dbo'
DECLARE alterOwnerCursor CURSOR FOR
SELECT [name] FROM dbo.sysobjects
WHERE xtype = 'U' or xtype = 'P'
AND LEFT([name], 2) <> 'dt'
OPEN alterOwnerCursor
FETCH NEXT FROM alterOwnerCursor INTO @currentObject
WHILE @@FETCH_STATUS = 0
BEGIN
SET @qualifiedObject = CAST(@currentOwner as varchar) + '.' + CAST(@currentObject as varchar)
EXEC sp_changeobjectowner @qualifiedObject, @newOwner
FETCH NEXT FROM alterOwnerCursor INTO @currentObject
END
CLOSE alterOwnerCursor
DEALLOCATE alterOwnerCursor