UK Seal

UK Seal, Image by StuE, Found by Sue Clark.
Found near the Essex / Suffolk border.

Crowned shield bearing a walking rat playing a flute // circle containing U.K.

Similar to the crowned Dutch shield bearing the rampant lion of Holland which is often used on Dutch Custom House seals. The walking rat playing a flute perhaps inverts the tale of the Pied Piper.

Possibly a utilities security seal e.g. electricity, gas or water.