About Us

About Us


Since 1893, Harry Armstrong has been providing quality locksmith services and innovative security solutions for the commercial industry, government, defence and residential properties throughout Perth and surrounding suburbs.

Keeping you safe is at the heart of what we do. Our commitment to providing quality workmanship and exceptional customer service is key to every project we undertake.

We’ll closely review your current situation, and ensure your property is not left vulnerable by recommending a full proof security plan that is customised to your unique needs. Our technicians are among the best in the business. They will expertly replace or install your master key or restricted key systems, locks, door hardware and safes quickly and efficiently.

We provide regular maintenance, repairs and upgrades where required, to ensure your environment remains protected at all times and prolongs the life of your security system.


Meet the team

Donald Montgomery

Don Montgomery

Managing Director

Donald purchased the Harry Armstrong business back in 2010. Don brings with him 30 years experience in mining and construction, both domestically & internationally.

Craig Corless

Craig Corless

Operations Manager

Craig started his apprenticeship with Harry Armstrong back in 1982 as a second generation employee. He is a member of the Master Locksmith Association and the ANZLA.

Mark Hollings

Mark Hollings

Sales Manager

Mark started his apprenticeship with Harry Armstrong in 1982. He is a member of the Master Locksmith Association (MLA), Security and Construction Equipment Committee endorsed (SCEC) and SALTO accredited.

Norman Kane

Norman Kane

Senior Manager

Norman has been with the company since 1965 when he first started his apprenticeship. with Harry Armstrong in 1965 and been with the company His father was one of the owners who purchased the business from Harry Armstrong in the 1950s.

Joshua Corless


Senior Locksmith

Joshua joined the team in 2012 as a third generation locksmith with Harry Armstrong, and is a highly experienced locksmith with 7 years experience.

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Dylan Churchill


Dylan is part of our skilled team of locksmiths. He joined Harry Armstrong in 2014.

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Dean Vuksanovic


Dean joined our dedicated locksmith team in 2017.

Daniel Corless


A third Generation locksmith with Harry Armstrong, Daniel joined the team in 2017.

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Helen Montgomery


Helen joined Harry Armstong in 2010 as a second-generation employee, and keeps the office running smoothly looking after the day to day administration.

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Kristian Montgomery


Kristian is a third generation employee who joined the company in 2015 and looks after all of the company’s financials.

Perth’s Leading Locksmith


Our licensed locksmiths are proud members of the Masters Locksmith Association, the Australian and New Zealand Locksmith Association. We are Perth’s number 1 SCEC endorsed locksmith. We take pride in providing a prompt, reliable and friendly service.


We combine our local knowledge and locksmith expertise of 125 years with today’s modern technology to deliver innovative security solutions in Perth.


Our highly trained Perth locksmith technicians can design, install and maintain specialist security systems to ensure your premises are secure.