Instant Proof

Same-day service

A pound sign indicating the cost effectiveness of working with the Proof House.

Premium Option

Guaranteed timescales

Expert Handling

Caring for every firearm

Proof Services for Best Gun Makers

THE BEST PROOF SERVICES

The London Proof House ensures Best Gun Makers meet the highest safety and quality standards. With centuries of expertise, the Proof House provides rigorous proof tests, compliance with UK law, and a proof mark of excellence - the Crowned GP mark.



The trusted proof test upholds the prestige and reliability of British best quality gunmaking, and protects the reputation of traditional Gun Makers by ensuring all Best Guns are safe for use.

Unrivaled Heritage

The London Proof House, established in 1637, is integral to London’s Best Gun Makers, preserving centuries of craftsmanship and excellence. Its rigorous proving process ensures safety, legality, and quality, upholding British gunmaking traditions.


This heritage reinforces trust, prestige, and global recognition, maintaining the highest standards in bespoke firearm production for discerning clients.

Care and Attention

Attention to detail in the London Proof House’s process is crucial for Best Gun Makers. Rigorous testing ensures firearms meet safety, legal, and quality standards.

 

For a firearm to bear the Crowned GP proof mark of the London Proof House indicates the gun has passed the most rigorous test of safety and quality. The London Proof Marks give a gun owner confidence in the excellent quality and safety of the bespoke and handmade gun.

 

We apply proof marks with whichever technique the customer requires, and with perfect precision, to ensure they do not detract from the beauty of the gun.

Deep Knowledge and Understanding

The London Proof House has unparalleled expertise in gunmaking and gun proof, with deep knowledge of historical and modern firearms. Its rigorous testing ensures the safety, reliability, and craftsmanship of guns, which is crucial for the best gunmakers.

 

By adhering to precise standards, it offers assurance to gunmakers and clients that the high value guns meet the highest safety and quality benchmarks.

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.

Customer Reference from Longthorne

Rigby have been sending our guns and rifles to the London Proof House for hundreds of years now. The London Proof Marks give our customers confidence that the gun is safe to use.

We have an excellent working relationship with the team at the London Proof House. They provide us an array of services, from while-you-wait Proofing to onsite experiences for our craftsmen, allowing them to gain an insight into the proofing process and protocols.

The Gallyon logo referencing the quality of the work of the London Proof House

The staff at the London Proof House, from the Proof Master to the Proof Assistants, exhibit a remarkable level of professionalism and expertise.

The Gallyon logo referencing the quality of the work of the London Proof House
Customer Reference from Longthorne

Our experience with the London Proof House has been excellent. They uphold the highest level of integrity, ensuring all work meets rigorous safety and quality standards.

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.

Gun Proof & Reproof

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

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.

FAQs

  • Can you proof rifles chambered for wild cat cartridges?

    Yes.

  • Can you proof rifles chambered to non-standard neck sizes?

    Yes.