Free scheduling from your drawings
Send us your architect’s drawings or a door schedule and a RegAI ironmonger will specify every opening — handing, fire-rating, function and finish — and return a free, itemised quote.
Established 1888 · Family run · Fourth generation
The details are all we do.
For 137 years the Johns family has specified architectural ironmongery for Britain's finest doors — from period homes and heritage restorations to hotels, hospitals and landmark commercial projects.
We don't sell everything just ironmongery door and windows that are trusted and tested.
Where it all began 175 Central Street, London
Founded in 1888 as builders’ contractors in Islington, G Johns & Sons has spent more than a century perfecting one craft: getting the ironmongery right. Today, led by a GAI-qualified, Registered Architectural Ironmonger, we bring that same obsession to every handle, hinge and lock we supply.
Jeremy Barltrop
Managing Director · RegAI
Our Story
137 years in the making
What We Do
More than a box of parts
Trade accounts & project support
Builders, architects and designers get trade pricing, priority stock, split deliveries to site and a named expert who knows your project from the first drawing to the last door.
Refurbishment & restoration
From a single stiff lock to a whole period property, we restore and re-finish original ironmongery — keeping the character of the building while making everything work as it should.
Replicated from the original
Can’t find a match for a one-off heritage piece? We can replicate ironmongery from your originals, so a repair or a missing handle is indistinguishable from the rest.
GAI
RegAI · 1888
We hold the highest qualification in architectural ironmongery
RegAI is the highest professional qualification awarded by the Guild of Architectural Ironmongers. It means every specification and piece of advice you receive is underpinned by formal training, examination, and years of on-site experience — not guesswork.
Led by Jeremy Barltrop, Managing Director · GAI-qualified RegAI · fourth-generation ironmonger.
The Team
Real experts, not a call centre
Family-run since 1888 — the people who answer the phone are the people who know the products.
Jeremy Barltrop
Director - Registered Architectural Ironmonger
RegAI
Mason Vrahimis
Sales & specifications
GAI - Level 2
Simon Mowbray
Sales & technical
30 + Years Experience
Georgia Prigmore
Sales & Purchasing
Amelia Greenwood
Sales & Marketing
Aga Beldyga
Warehouse Manager
Visit Us
See and feel the difference
Finishes look different in the hand. Visit our showroom and trade counter to compare ranges in person, with free advice from a qualified ironmonger.
- G Johns & Sons Ltd, Unit D Westside Business Centre, Flex Meadow, Harlow, Essex, CM19 5SR
- Monday to Friday 9am - 5pm
- 020 8360 7771
1888
Founded · 137 years of trade
5
Generations of the family
4.9
Trustpilot · 3,700+ reviews
900
Product lines held in stock
Get the details right.
Whether it’s a single handle or a whole house, talk to a RegAI expert — or browse the range.