Manufacturer catalog

MSI-Defence Systems

MSI-Defence Systems is a British defence manufacturer based in Norwich, Norfolk, focused on stabilized small- and medium-calibre weapon systems, naval gun mounts, remote weapon stations, sensors, fire control, and short-range counter-UAS systems. Its public product line centers on the SEAHAWK naval gun family and TERRAHAWK land systems, with cataloged MSI systems including the DS30M 30 mm naval gun and Terrahawk Paladin very-short-range air-defense system.

2 weapons

MSI-Defence Systems operates from Salhouse Road in Norwich and is registered in the United Kingdom as MSI-DEFENCE SYSTEMS LTD. Companies House records the current company as incorporated on 23 May 1969, with earlier names including Laurence Scott Limited and Defence Equipment and Systems Limited before the MSI-Defence Systems name was adopted in 1991.

The company's public materials and UK defence-industry listings describe a long naval gunfire-control lineage, with MSI supplying small- and medium-calibre naval gun systems to the Royal Navy and export customers. Its SEAHAWK family covers shipboard stabilized mounts, while TERRAHAWK adapts the company's remote weapon-station and fire-control experience to land-based close-range air-defence, counter-UAS, coastal, border, and force-protection roles.

MS INTERNATIONAL plc's 2025 annual report identifies Defence and Security as the group's primary focus, reporting export activity in naval weapon systems for the United States and Germany and continuing orders for VSHORAD land-based counter-drone systems. That group context makes MSI-Defence Systems a small-to-medium calibre weapons specialist rather than a broad platform prime.

small- and medium-calibre naval gun systemsstabilized remote weapon stationsvery short-range air defensecounter-UAS systemselectro-optical sensors and fire controlweapons support services

Notable Systems

DS30M 30 mm naval gun, Naval gun, Naval Systems

DS30M 30 mm naval gun

Naval gun

Royal Navy 30 mm automated small-calibre gun mount associated with MSI's SEAHAWK stabilized naval-gun architecture and Mk 44 Bushmaster II cannon fits.

Sources: ADS MSI-Defence Systems Ltd Profile, MSI-DS SEAHAWK DS A2
Terrahawk Paladin, Very short-range counter-UAS air defense system, Air Defense

Terrahawk Paladin

Very short-range counter-UAS air defense system

Mobile and deployable member of MSI's TERRAHAWK VSHORAD family, combining remote-controlled gun effects, sensors, and fire-control components for close-range air-defence and counter-UAS missions.

Sources: MSI-DS Terrahawk VSHORAD Product Page, UK MOD Ukraine Support Package Terrahawk Paladin

Manufacturer History

  1. Current UK company incorporated

    Companies House records MSI-DEFENCE SYSTEMS LTD's current company number as incorporated on 23 May 1969 under the Laurence Scott Limited name.

    Sources: MSI-Defence Systems Companies House

  2. MSI-Defence Systems name adopted

    Companies House previous-name records show Defence Equipment and Systems Limited changed to MSI-DEFENCE SYSTEMS LTD on 23 August 1991.

    Sources: MSI-Defence Systems Companies House

  3. Terrahawk Paladin selected for UK-funded package

    The UK Ministry of Defence announced MSI-DS Terrahawk Paladin systems as part of an International Fund for Ukraine air-defence package, publicly identifying the system in British procurement support material.

    Sources: UK MOD Ukraine Support Package Terrahawk Paladin

  4. MSI group emphasizes defence growth

    MS INTERNATIONAL plc's 2025 annual report said Defence and Security accounted for 70 percent of group turnover and highlighted naval weapon system exports and VSHORAD land-based counter-drone orders.

    Sources: MS International Annual Report 2025

Website links
Official websiteCompanies House recordADS member recordTERRAHAWK VSHORAD product page

Public MSI and industry sources emphasize naval gun systems, remote weapon stations, sensors, support services, and VSHORAD counter-drone systems; conflict-use details remain in the individual weapon records.

Manufacturer Sources

  • MSI-Defence Systems Official WebsitePublisher: MSI-Defence Systems | Note: Supports official website, product-family navigation, contact details, and MSI-DS focus on SEAHAWK, TERRAHAWK, sensors, fire control, support services, and related skills. | Accessed: 2026-07-11
  • MSI-DS Terrahawk VSHORAD Product PagePublisher: MSI-Defence Systems | Note: Supports TERRAHAWK VSHORAD roles, deployment modes, counter-UAS and counter-FIAC focus, remote control, sensors, effectors, and UK/US company contact addresses. | Accessed: 2026-07-11
  • MSI-DS SEAHAWK DS A2Publisher: MSI-Defence Systems | Note: Supports MSI's SEAHAWK DS A2 stabilized naval gun family and the DS30M-related manufacturer/product context used by the connected weapon record. | Accessed: 2026-07-11
  • MSI-Defence Systems Companies HousePublisher: Companies House | Note: Supports registered office at Salhouse Road, Norwich, active private-company status, 23 May 1969 incorporation, SIC code, and previous company names. | Accessed: 2026-07-11
  • ADS MSI-Defence Systems Ltd ProfilePublisher: ADS Group | Note: Supports MSI's UK defence-industry listing, naval equipment supply to the Royal Navy and export customers, SEAHAWK system context, and Salhouse Road/Norwich contact information. | Accessed: 2026-07-11
  • MS International Annual Report 2025Publisher: MS INTERNATIONAL plc | Note: Supports MS INTERNATIONAL group context, Defence and Security turnover share, naval weapon system export activity, VSHORAD counter-drone orders, and investment in small- to medium-calibre stabilized systems. | Accessed: 2026-07-11
  • UK MOD Ukraine Support Package Terrahawk PaladinPublisher: UK Ministry of Defence | Note: Supports the public identification of MSI-DS Terrahawk Paladin in a UK government package announcement and the official GOV.UK image used for this manufacturer page. | Accessed: 2026-07-11

Produced weapons

Category

Air Defense

Systems that contest aircraft, missiles, helicopters, and drones.

1/1
Terrahawk Paladin, Very short-range counter-UAS air defense system, Air Defense2014 Russia-Ukraine WarTerrahawk PaladinVery short-range counter-UAS air defense systemBuilt in: United KingdomTerrahawk Paladin is MSI-Defence Systems' British Terrahawk VSHORAD configuration for close-range air defense and counter-UAS point protection. The modular system combines a remote gun mount, SATOS electro-optical sensing, radar-supported cueing, and vehicle, trailer, or NATO-standard flatrack deployment with offset remote operation. The UK announced Terrahawk Paladin for Ukraine through the International Fund for Ukraine in October 2023, and Ukrainian reporting later showed British-supplied systems in service with the 156th Anti-Aircraft Missile Regiment.

Category

Naval Systems

Warships, submarines, unmanned surface vessels, naval craft, and maritime combat systems.

1/1
DS30M 30 mm naval gun, Naval gun, Naval Systems2023 Red Sea CrisisDS30M 30 mm naval gunNaval gunBuilt in: United KingdomThe DS30M is a British shipborne 30 mm automated small-calibre gun mount built around the Mk 44 Bushmaster II cannon and MSI-Defence Systems' Seahawk mount architecture. It gives patrol vessels, auxiliaries, frigates, and destroyers a remotely controlled close-in gun for fast surface threats, drones, and force protection. In the 2023 Red Sea Crisis, HMS Diamond's crew used a 30 mm cannon against a Houthi drone while protecting merchant shipping.