Dutch, Customs Seal, UK,

Dutch, Customs Seal, UK, Image by StuE, Found by Roy Charlton.
Found in Colchester Region.

Lion Rampant on shield with flower? above / U?-K. Lion unusually faces left, see Dutch Custom seals and Tate seals.

See BSG.BS.01998 for a better example of the (same?) seal.

Mark Ouwerkerk discovered the U.K. stands for Uitvoer Keuring (Export Inspection). See RIJKSWAPEN-UK.