ARMS: Barry Argent and Azure an Eagle displayed wings inverted Or on a Chief per pale Gules and Sable a Saxon Crown between two Bulls' Heads caboshed Gold.
CREST: Out of a Mural Crown Or a demi Horse Sable gorged with a Collar gemel and maned Argent breathing Flames proper and supporting a Spear erect Gules.

Motto 'PROGREDIENS CONFIRMATUR ANIMUS' - Our spirit is strengthened by advancing.
Granted 12th April 1955.

Picture thanks to David Hale, NSW, Australia.

The white and blue barred background is from the arms of the de Greys, Lords of the Manor of Etone, which included Water Eaton, Bletchley and Fenny Stratford. The golden eagle is symbolic of the Romans and refers to the origin of Fenny Stratford around Watling Street and Magiovintum. The red and black 'chief' is in the liveries of the Dukes of Buckingham and the background of the County arms. This, with the Saxon crown from the County crest, indicates the importance of Bletchley in the affairs and administration of North Buckinghamshire. The bulls' heads refer to the importance of the agricultural markets, the Fenny Stratford market (granted in 1104) being the ancestor of the modern Bletchley market. Thus Roman, Saxon, mediaeval and modern stages are all shown.
The mantling is in the liveries of the shield, those of the ancient Welsh family of Hanmer, who have close connections with the Parish of Simpson. The gold mural crown, has a triple significance. It is a familiar emblem of local government, appears in the same position in the arms of the Leons of Bletchley Park, and also refers to the brickmaking industry, which saw the beginnings of modern industrial development in the area. The black horse, ('The Iron Horse') breathing fire and with a flowing white mane, is a symbol of the development of the area with the advent of the railway, which is further represented by the double collar around the horse's neck. The a red spear is a symbol of the martyrdom of St. Thomas, patron saint of Simpson, to indicate that this parish contained the original Fenny Stratford station.
The motto is from Cicero and is symbolic of Bletchley and its future.

ARMS: Per fesse Gules and Sable a Bar wavy Argent between in chief an Oak Tree couped and fructed and in base an Eagle displayed wings inverted Or in the flanks and over all two Abbots' Croziers addorsed of the last.
CREST: On a Wreath of the Colours Out of a Mural Crown Gules a demi Bull Sable armed unguled and gorged with a Torse of Wheat Or resting the sinister hoof on a Buckinghamshire Lace-Pillow proper.

Motto 'FRESH COURAGE TAKE'.
Granted 10th May 1957.

Picture thanks to David Hale, NSW, Australia.

The background of red and black is in the County colours, and the white wave represents the River Ouse and its tributaries which water the area. The golden oak-tree, which can be typified as 'Cowpers Oak' represents the ancient wooded northern parts of which Salcey Forest is typical. The Roman eagle also in gold stands for the historical influence in the south of the Roman station of Magiovintum, which is considered to have been near where Brickhill now stands. The gold crosiers refer to the religious foundations at Bradwell, Lavendon and Ravenstone.
The red mural or walled crown, a symbol of civic government, also represents the brickmaking industry. Rising from this is a black bull with gold horns and hooves and wearing a chaplet of wheat, for the leather industry, agriculture and straw plaiting. The pillow refers to pillow lace making, a cottage industry encouraged by Flemish immigrants at the end of the eighteenth century.
The motto is from one of the most widely known hymns of poet William Cowper, who lived at Olney for thirty years. (Hymns Ancient and Modern No. 373).

ARMS: Or two Lions passant in pale in base as many Bars wavy Azure all within a Bordure gyronny of eight Gules and Sable.
CREST: On a Wreath of the Colours issuant from the Battlements of a Tower a Swan rising and supporting over the dexter shoulder a Staff proper flying therefrom a Banner per pale Gules and Sable charged with a Sword point upwards surmounted of two Keys in saltire all Gold.

Motto 'PRAECEPTA NON HOMINES' - Principles, not men.
Granted 17th May 1951.

Picture thanks to David Hale, NSW, Australia.

The blue lions are from the arms of the Paganel family, from whom the town derived its name, and their descendants, the Somerys. The two blue waves represent the rivers Ouse and Ouzel and the red and black of the border is from the arms of the County Council and were for centuries the liveries of the Earls and Dukes of Buckingham.
The battlements refer to the former stronghold of the Paganels and the swan, like that in the County arms, is derived from the badge of the Dukes of Buckingham, it also refers to the famous Swan Inn. The keys of St. Peter and sword of St. Paul refer to the dedication of the parish church.

ARMS: Per chevron Argent and Gules in chief two Roses of the last barbed and seeded proper and in base a Swan holding in the beak a White Pink slipped and leaved also proper on a Chief Azure the Astronomical Symbol of Uranus ir­radiated between two Brick-Axes Or.
SUPPORTERS: On the dexter side a Figure of Mercury proper vested Argent mantled Azure and on the sinister side a Figure of Vulcan proper vested Argent holding in the dexter hand a Pair of Pincers also Argent.

Motto 'FIDUCIA ET VI' - By confidence and strength.
Granted 3rd September 1938.

The swan is the County emblem and the flowers represent the horticultural interests of the Borough. The brick-axes refer particularly to brick-making and the sign of Uranus is from the arms of the family of Herschel of Slough, and relates to the discovery of the planet by Sir William Herschel.
The supporters symbolize trade and industry.