Trade data are available on a monthly basis. The latest HMRC Overseas Trade Statistics cover November 2009. The figures for salt are shown in the following table.
November 2009 CN codes Exports Imports 2501: Salt including table salt and denatured salt, pure sodium chloride whether or not in aqueous solution, sea water 28,728 15,280 Of which: 25010010: Sea water and salt liquors 504 425 25010031: Common salt etc. for chemical transformation (separation of sodium from chlorine) for the manufacture of other products 21 96 25010051: Common salt denatured or for industrial uses, other than preservation or preparation of foodstuffs for human or animal consumption 13,275 10,439 25010091: Common salt etc., other than for chemical, denatured or industrial uses, salt suitable for human consumption 5,665 2,509 25010099: Common salt etc., other than for chemical, denatured or industrial uses, other than salt suitable for human consumption 9,263 1,811