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Your Trusted Partner for Steel Security Solutions in London
Gosport Engineering is a long-established family business renowned for delivering high-quality steel security solutions. Specialising in made-to-measure steel doorsets, including fire doors tested up to four hours, we combine precision engineering with durable materials to meet exacting standards. Our in-house team manages every stage from design to installation, serving major companies, public sector organisations, and local contractors. Products undergo rigorous quality checks, featuring zinc phosphate pre-treatment and powder coating for longevity.

With a focus on customer collaboration, we create tailored security features in diverse finishes and RAL colour options. Our expertise extends to boundary protection, steel staircases, and anti-vandal window solutions, supported by a dedicated installation team across southeast England. Backed by decades of experience, we prioritise reliability, compliance, and client satisfaction in every project.
Services
Steel Doors Fire Doors Window Protection Boundary Fencing Steel Staircases Louvred Grilles Gate Systems Perimeter Security Handrails Bin Enclosures
Highlights and features
  • We offer fire doors tested to 4-hour integrity standards
  • In-house design, fabrication, and installation capabilities
  • Serving major utilities, construction firms, and NHS Trusts
  • RAL colour options for customised aesthetic integration
  • Full site survey and made-to-measure manufacturing process
Services
Fire-Rated Steel Doors
Our fire doors provide up to four hours of fire integrity, manufactured to exact specifications with zinc phosphate treatment and powder coating. Each door undergoes multi-stage quality checks to meet regulatory standards. Available in various configurations with optional RAL colour finishes.
Anti-Vandal Window Protection
Custom-fitted window protection systems include louvred grilles, defenders, and lattice bars engineered for durability. Powder-coated steel construction resists corrosion while maintaining aesthetic flexibility through 200+ RAL colour options.
Boundary Security Systems
Tailored boundary solutions feature welded steel gates, railings, and fencing with galvanised or powder-coated finishes. Designed for commercial and public sector sites requiring secure access control and perimeter demarcation.
Steel Staircases
Structurally engineered steel staircases with handrails and balustrades, fabricated to precise architectural specifications. Available as internal or external installations with anti-slip treads and custom finish options.
Supply-Only Security Products
We provide pre-manufactured security products for self-installation, including doorsets, window guards, and fencing components. All items meet our quality standards with optional delivery across the UK.
Questions
What steel door options do you provide?
We offer standard duty, heavy duty, fire-rated, louvred, and glazed steel doors, all made to measure with optional RAL colour finishes.
Do you install security window protection?
Yes, we supply and install anti-vandal window grilles, defenders, bars, and lattice systems tailored to exact dimensions.
Can you create custom boundary security?
We design and install made-to-measure gates, railings, perimeter fencing, and barrier systems using high-grade steel materials.
Do you work outside southeast England?
While our installation team operates mainly in southeast England, we offer supply-only products with UK-wide delivery.
What quality standards do you follow?
All products undergo rigorous inspections to meet relevant industry standards, featuring zinc phosphate pre-treatment and powder coating.