United Kingdom

Top 12 largest UK Companies in the Security & Protection Services industry by Market Cap

This is the list of the largest public listed companies in the Security & Protection Services industry from the United Kingdom by market capitalization with links to their reference stock.

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Top Security & Protection Services Companies from the United Kingdom as of Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
1 London Security plc $632.0 M United Kingdom UK Industrials UK Security & Protection Services
2 Marlowe plc $473.9 M United Kingdom UK Industrials UK Security & Protection Services
3 Journeo plc $94.5 M United Kingdom UK Industrials UK Security & Protection Services
4 Synectics plc $76.1 M United Kingdom UK Industrials UK Security & Protection Services
5 AssetCo plc $54.5 M

(Jan. 1, 2025)

 United Kingdom UK Industrials UK Security & Protection Services
6 FireAngel Safety Technology Group plc $23.1 M

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Security & Protection Services
7 Westminster Group plc $16.4 M United Kingdom UK Industrials UK Security & Protection Services
8 Croma Security Solutions Group plc $15.9 M United Kingdom UK Industrials UK Security & Protection Services
9 Newmark Security plc $10.3 M United Kingdom UK Industrials UK Security & Protection Services
10 Petards Group plc $6.9 M United Kingdom UK Industrials UK Security & Protection Services
11 Thruvision Group plc $3.0 M United Kingdom UK Industrials UK Security & Protection Services
12 Image Scan Holdings plc $2.5 M United Kingdom UK Industrials UK Security & Protection Services

Top Security & Protection Services Companies from the United Kingdom as of Jul. 01, 2025

1. London Security plc

Company Profile: London Security plc
Market Cap (USD): $632.0 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

2. Marlowe plc

Company Profile: Marlowe plc
Market Cap (USD): $473.9 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

3. Journeo plc

Company Profile: Journeo plc
Market Cap (USD): $94.5 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

4. Synectics plc

Company Profile: Synectics plc
Market Cap (USD): $76.1 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

5. AssetCo plc

Company Profile: AssetCo plc
Market Cap (USD): $54.5 M (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

6. FireAngel Safety Technology Group plc

Company Profile: FireAngel Safety Technology Group plc
Market Cap (USD): $23.1 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

7. Westminster Group plc

Company Profile: Westminster Group plc
Market Cap (USD): $16.4 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

8. Croma Security Solutions Group plc

Company Profile: Croma Security Solutions Group plc
Market Cap (USD): $15.9 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

9. Newmark Security plc

Company Profile: Newmark Security plc
Market Cap (USD): $10.3 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

10. Petards Group plc

Company Profile: Petards Group plc
Market Cap (USD): $6.9 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

11. Thruvision Group plc

Company Profile: Thruvision Group plc
Market Cap (USD): $3.0 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

12. Image Scan Holdings plc

Company Profile: Image Scan Holdings plc
Market Cap (USD): $2.5 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Security & Protection Services

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