British Gunmakers · London

Boss
& Co.

From Thomas Boss’s early nineteenth-century London work to the innovations of John Robertson, Boss & Co. developed a reputation for elegant proportions, mechanical ingenuity and uncompromising standards in the making of the Best London gun.

Established 1812 London 73 St James’s Street · 1839 Boss O/U · 1909
Builders of Best Guns

A London house defined
by refinement and invention.

Boss & Co. traces its history to 1812, when Thomas Boss began advertising sporting guns under his own name in London. The firm’s early reputation was built on workmanship and proportion; later generations would add a remarkable sequence of mechanical innovations.

The result was a distinctive Boss identity — light, elegant guns, restrained lines, finely executed engraving and mechanisms developed with the sporting gun’s handling qualities always in mind.

Thomas Boss · The Early Years

From the London trade to a name of his own.

The Boss family’s connection with gunmaking began with William Boss, who trained in Birmingham before moving to London and working with Joseph Manton. His youngest son, Thomas, continued in the trade and developed a reputation as a skilled gunmaker.

In 1812 Thomas began advertising guns carrying the Boss name. Initially working through the London trade and serving customers directly, he gradually established a business whose reputation rested on the quality of its workmanship.

Historic Boss & Co. gunmaking photograph
St James’s Street · London

At the heart of fashionable London.

Boss moved into St James’s Street in the late 1830s, settling at No. 73 in 1839. The address placed the firm among London’s clubs, specialist shops and the clientele who formed the traditional market for a best-quality sporting gun.

Guns were not simply displayed there. The building also housed gunmakers from basement to upper floors, making No. 73 both a shopfront and a working London gunmaking premises for much of the nineteenth century.

Historic Boss & Co. London trade label
Selected Milestones

Two centuries of Boss & Co.

Selected moments in the development of the house, from Thomas Boss to the innovations that transformed its reputation around the world.

1812
The Boss name emerges
Thomas Boss advertises sporting guns under his own name in London.
1839
73 St James’s Street
Boss settles at the address that becomes closely associated with the firm throughout the nineteenth century.
1851
The Great Exhibition
Boss & Co. participates in Prince Albert’s Great Exhibition, reflecting the firm’s growing standing among London gunmakers.
1857
Thomas Boss dies
The founder dies after seeing the Boss name become firmly established among London’s leading gunmaking houses.
1890
John Robertson joins
Gunmaker John Robertson enters the business as a partner, beginning one of the most important periods in Boss history.
1893
Robertson takes control
Robertson becomes sole owner and the firm’s reputation for innovation accelerates.
1893
Boss single trigger
Robertson’s work on the reliable single trigger becomes one of the defining technical achievements of the house.
1909
The Boss over-and-under
Robertson introduces the celebrated Boss over-and-under, bringing a lighter and more elegant British form to the configuration.
Historic portrait from the Boss & Co. Robertson era
The Robertson Era · 1890–1917

The period that reshaped Boss & Co.

John Robertson brought a gunmaker’s technical mind to the ownership of Boss & Co. After joining the firm in 1890, he became sole owner in 1893 and used the business as a platform for a series of ideas that would become inseparable from the Boss name.

The single trigger, the Boss ejector and the celebrated over-and-under all emerged from this period. Robertson also presided over the development of the firm’s characteristic Rose & Scroll engraving, executed by engraver John Sumner.

  • Boss Single Trigger
  • Boss Ejector
  • Boss Over-and-Under
  • Rose & Scroll Engraving
Boss & Co. over-and-under sporting gun
The Boss Over-and-Under · 1909

An enduring British design.

Over-and-under guns existed before Boss introduced its version, but Robertson’s 1909 design approached the form with the proportions and handling qualities associated with the best English sporting gun.

The action was notably slender and the barrels sat low in relation to the hands. Its flowing lines gave the gun an appearance quite unlike the heavier over-and-under designs then commonly encountered.

That combination of mechanical ingenuity and visual restraint made the Boss over-and-under one of the most recognisable designs in British gunmaking.

Boss & Co. engraving and action detail
Rose & Scroll Fine engraving became an important part of the visual language associated with Boss & Co.
Collection of Boss & Co. sporting guns
Best Guns Only Elegant action shapes, restrained proportions and hand craftsmanship remain central to the Boss aesthetic.
The Boss & Co. Legacy

A house recognised by its proportions.

Boss & Co.’s importance in British gunmaking rests on more than age. The firm’s most influential period produced mechanisms and forms that helped define the mature sporting gun: a dependable single trigger, compact ejector work, distinctive engraving and an over-and-under whose elegance became a benchmark of its type.

Through changes of generation and address, the Boss name retained a reputation for limited production and exacting hand work — an approach captured by the firm’s long-standing emphasis on making best-quality sporting guns.

Boss & Co. occupies a distinctive place in the London tradition: a maker whose greatest innovations were matched by an equally strong sense of line, proportion and restraint.
English Doubles

Continue exploring British gunmaking.

Discover the histories, craftsmanship and traditions of other celebrated British gunmaking houses.

Current Boss & Co. Guns for Sale

Explore 3 current Boss & Co. offerings from the English Doubles collection.

Square-Body Self-Opening Sidelock Ejector12 Gauge · Circa 1939 · Serial 8607$28,750 · AvailableEasy-Opening Single-Trigger Sidelock Ejector12 Gauge · 1986/87 · Serial 9952$25,750 · AvailableAssisted-Opening Single-Trigger Sidelock Ejector12 Gauge · 1932 · Serial 8029$24,500 · Available
View the full collection →