ARMS: Or on a Pale wavy double plain cotised Azure a pallet wavy Argent a Chief Azure thereon three pierced Cinquefoils Or.
CREST Out of a Coronet composed of four Ears of Wheat and four Acorns leaved set alternately upon a Rim Or a winged demi Lion Argent the wings Or semée of Annulets Gules ducally gorged Or.

Motto 'RIDENT FLORENTIA PRATA'-Our flowering fields rejoice.
Granted 20th May 1964.

Picture thanks to David Hale, NSW, Australia.

The wavy pale represents the River Great Ouse, largest and longest of the fenland rivers and the wavy pallet represents the River Little Ouse, which formed a boundry of the district. By contrast the straight lines sybolise the artificial cuts and drains which criss cross this landscape. The three gold peireced cinquefoils on blue are derived from the arms of the Lords Bardolph of Wormgay, who for generations following the Norman Conquest were successive Lords of the Manor of Wormegay in the north of the district. They owned other large estates in the area, including the nearby Manor of Stow to which they suffixed the name of Bardolph.
The coronet represents the countryside and agriculture. Out of this rises the white lion, with a crown around its neck and gold wings charged with red rings. The lion is from the crest of the Hare family and the wings from the heraldry of the Bagges, they are combined in reference to the great part played by these families in the life of the district and the Council.

ARMS: Or on a Cross quadrate Azure a Castle of three domed towers on each a Pennon flying to the dexter between four Cross crosslets fitchy Gold on a Chief Sable a Lion passant guardant of the field.

Motto 'NON SIBI SED PATRIAE'-Not for oneself but for one's country.
Granted 21st April 1955.

The predominant colours of blue and gold, are those of the great de Warrenne family of Castleacre. The cross recalls the numerous religious houses of the district which played a great part in its early history. The castle is from the old seal of the former Borough of Castle Rising, and the crosslets are from the arms of Castleacre Priory and of the Howards, Dukes of Norfolk. The black chief is for the Black Prince, and the Royal lion, a special mark of favour, refers to the presence of Sandringham House within the bounds of the district.
The motto is that of Lord Romney, it is appropriate not only because of Lord Romney's own service to the Council, but also as an expression of the Council's service to the whole District, inspired by that of the Royal residents of the district to the nation.

ARMS: Azure three Dragon's Heads erased and erect Or in the mouth of each a Cross-crosslet fitchy of the last.

Recorded at the Visitation of 1563.

The dragon's heads refer to the legend of St. Margaret of Antioch, who has been portrayed on the Seals of Lynn since the 13th Century, and to whom the Parish Church is dedicated. She was the Christian daughter of a pagan priest and was imprisoned for her faith. She was devoured by Satan in the form of a dragon, but she wore a cross by whose power she was able to burst the dragon open and emerge unhurt. Her symbol is therefore, a dragon's head pierced by a cross.
The arms were sometimes shown with a pelican for a crest, probably adopted as a Christian emblem, for that bird is a symbol of the Eucharist, because it was said by medieval writers to feed its young with blood drawn from its own breast.

Motto 'STUDIO FIDE ANIMIS'-.
Granted 20th August 1957.

Motto 'FIDE ET LABOR'-.
Granted 20th December 1962.