---
title: About Koyda Ltd | Metalwork & Steel, Lingfield, Surrey
url: https://www.koyda.com/about-us/
description: Koyda Ltd, led by directors Joe Cromwell and Martin Sweeney. Architectural metalwork and structural steel for contractors and homeowners since 2005.
last_modified: 2026-10-10
publisher: Koyda Ltd, Units 27–29 Jesmor Farm, St Piers Lane, Lingfield, Surrey RH7 6PN. 07753 213617, joe@koyda.com
---

About

# About Koyda Ltd

Architectural metalwork and structural steel company based at Jesmor Farm in Lingfield, Surrey. Run by directors Joe Cromwell and Martin Sweeney.

In-house designSolidWorks 3D model

Koyda Ltd is an architectural metalwork and structural steel company based at Jesmor Farm in Lingfield, Surrey. We design, fabricate and install balustrades, balconies, staircases, handrails, plant screens and structural steelwork for main contractors, developers and design teams across London and the South East.

Koyda Ltd is run by its directors, Joe Cromwell and Martin Sweeney, who bring more than 50 years of combined experience. The company was incorporated in 2005.

In 2025 we expanded into aluminium balconies and balustrades and invested in new equipment and transport. In 2026 we moved to larger premises in Lingfield. We have also strengthened our in-house design capability. We model in SolidWorks, coordinate in Revit, draw in AutoCAD, and produce the coordinated drawings and design information contractors need for Gateway 2 under the Building Safety Act.

What main contractors get

* One accountable package, from design and engineering through fabrication to installation
* Early input to resolve interfaces and value engineer before anything is made
* Drawings and design information for Gateway 2 on higher-risk buildings
* Clear handover information for O&M manuals and the golden thread

Policies and news

* [Ethos & mission](https://www.koyda.com/about-us/ethos/)
* [ESG policy statement](https://www.koyda.com/about-us/esg/)
* [Directors' update and outlook for 2026](https://www.koyda.com/news/directors-update-2026/)

Directors

## Who runs Koyda

JC

### Joe Cromwell

Director

[07753 213617](tel:+447753213617)[joe@koyda.com](mailto:joe@koyda.com)

Photo and one-line bio

MS

### Martin Sweeney

Director

[07956 477966](tel:+447956477966)[martin@koyda.com](mailto:martin@koyda.com)

Photo and one-line bio

Standards

## What we design and work to

* Approved Document K and BS 6180: guarding and barriers
* Approved Document M: handrails and accessible stairs
* Approved Document B and Regulation 7(2): fire, balconies on relevant buildings
* BS 5395: stair design
* Building Safety Act 2022: Gateway 2 design information and the golden thread

Accreditations

## Accreditations

Accredited**Constructionline Silver**

To confirm**SSIP scheme (e.g. CHAS / SMAS)**

To confirm**BS EN 1090 / welding**

To confirm**CSCS / site training**

Company information

## Company details

Company
:   Koyda Ltd

Registered
:   England and Wales, No. 05632312 (incorporated 2005)

VAT
:   166 6364 82

Registered office
:   48 Warwick Street, London W1B 5AW

Operating address
:   Koyda Ltd
    Units 27–29 Jesmor Farm, St Piers Lane
    Lingfield, Surrey RH7 6PN

Insurance

## Insurance

CoverDetails

Employers' liability
:   £ limit / insurer / expiry

Public liability
:   £ limit / insurer / expiry

Products liability
:   £ limit / insurer / expiry

Professional indemnity
:   £ limit / insurer / expiry