The wheat sheaves indicate the general agricultural background, as well as to the ancillary industries of flour milling and food production. The bull's head refers to one of Northamptonshire's principal activities — the leather industry, represented in this district by tanning and boot and shoe making. The red background of the shield is common to the arms of some of the principal manorial families, the Ishams (Isham), Isteds (Ecton), and Wilmers (Sywell). The blue and white vair chevron is also taken from the Isted and Wilmer arms and on it lie the three golden roses which also appear on a chevron in the arms of the Vaux of Harrowden.
The red and white of the mantling are the livery colours of the County and of several of the district's families, Isteds, Wilmers, Yelvertons, Fitzwilliams and Spencers. The Saxon crown is a reference to many local connections with that period, including the Saxon dictionary of Owen Manning of Orlingbury. The most famous Saxon monument of all, one of the principal landmarks in the county and one of the principal examples of Saxon Architecture in England, the tower of the Church at Earls Barton, completes the crest.
The motto is derived from the Vaux family's motto "Hodie non cras" - Today, not tomorrow.