Instant Proof

Same-day service

Premium Option

Guaranteed timescales

Expert Handling

Caring for every firearm

Auction Houses

THE PROOF HOUSE OF CHOICE FOR AUCTIONEERS

The London Proof House adds significant value to auction houses by verifying the authenticity, safety, and quality of firearms. Its proving certification ensures buyers can trust the condition and craftsmanship, increasing confidence and value in auctioned guns.

Authenticity

The London Proof House authenticates the condition of firearms through a meticulous inspection process. Guns are carefully examined for structural integrity, safety, and craftsmanship.


They undergo rigorous proving tests, including pressure testing and marking, to ensure they meet strict safety standards. This comprehensive process provides proof of authenticity, confirming the firearm’s reliability and quality for both manufacturers and buyers.

Safety First

The London Proof House verifies firearm safety for auction houses through a thorough inspection and proving process. Each firearm undergoes pressure testing to ensure it can safely handle the expected loads.


The Proof House marks verified firearms with official proof marks, offering assurance to auction houses and buyers that the guns meet rigorous safety standards, minimising risk.

Maximising Value

High-quality proof services from the London Proof House enhance a gun's value by certifying its safety, authenticity, and craftsmanship.


The rigorous testing and official proof marks provide assurance to buyers, making the firearm more desirable. Auction houses benefit by offering proven, reliable guns, attracting higher bids and confident buyers, ultimately increasing the overall sale value of the firearm.

Arrange a meeting

If you'd like to discuss your requirements with the Proof Master you can arrange a meeting with him via our booking tool.

Europe's leading Auctioneers of Fine Modern & Antique Guns

Holts Auctioneers have benefitted from the first class service the London Proof House have provided for many years. Their expertise in dealing with the diverse and sometimes very eclectic guns that pass through our hands which need proof has been indispensable and saved a good many historically important pieces.

Holts Auctioneers endorsing the London Proof House

We are ISO 9001 Certified

ISO 9001:2015 is an international standard that specifies requirements for a quality management system (QMS). 


It is designed to help organisations ensure they meet customer and regulatory requirements while enhancing customer satisfaction. 

We are the oldest CIP Proof House

While the London Proof House adheres to many C.I.P. (Commission Internationale Permanente) standards, it operates under the UK's Barrel Proof Act of 1868, which provides it with flexibility and independence in its proof testing processes.

Forms being prepared prior to the proving of a new rifle at the London Proof House

Gun Proof & Reproof

We proof guns for dealers, the military, precision target rifles, best gun makers, importers and auction houses.

A selection of guns waiting to be deactivated by the London Proof House

Deactivation

We deactivate, and certify the deactivation of all kinds of firearms, adhering to the latest standards.

Imports & Exports

We proof all kinds of imported guns and with pre-booking provide a same day instant proof service.

An inspection of a newly imported military firearm by the London Gun Proof House