Arms : Azure a Stag's Head caboshed between the attires a Cross flory Or on a Chief Argent a Fleur-de-Lys between two Saxon Crowns Gules.
Crest : Out of a Coronet composed of two Fleurs-de-Lys Or and as many Roses Gules barbed and seeded proper set alternately upon a Rim Gold a demi Lion Ermine ducally gorged also Gold and holding between the paws a Chapeau Gules turned up Ermine.
Motto: 'SERIO SERVIRE' - Earnestly to serve
The arms were officially granted on May 29, 1959 to the Wimborne and Cranborne RDC and continued by East Dorset in 1974.
For the explanation, see Wimborne and Cranborne.