United Kingdom

Top 13 largest UK Companies in the Aerospace & Defense industry by Market Cap

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

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Top Aerospace & Defense Companies from the United Kingdom as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 Rolls-Royce Holdings plc $132.92 B United Kingdom UK Industrials UK Aerospace & Defense
2 BAE Systems plc $68.71 B United Kingdom UK Industrials UK Aerospace & Defense
3 QinetiQ Group plc $3.19 B United Kingdom UK Industrials UK Aerospace & Defense
4 Ultra Electronics Holdings plc $3.04 B

(July 1, 2022)

 United Kingdom UK Industrials UK Aerospace & Defense
5 Chemring Group plc $1.72 B United Kingdom UK Industrials UK Aerospace & Defense
6 Senior plc $1.12 B United Kingdom UK Industrials UK Aerospace & Defense
7 Avon Protection plc $752.4 M United Kingdom UK Industrials UK Aerospace & Defense
8 Avon Rubber plc $718.8 M United Kingdom UK Industrials UK Aerospace & Defense
9 Cohort plc $552.5 M United Kingdom UK Industrials UK Aerospace & Defense
10 MS INTERNATIONAL plc $318.5 M United Kingdom UK Industrials UK Aerospace & Defense
11 Amedeo Air Four Plus Ltd $230.3 M United Kingdom UK Industrials UK Aerospace & Defense
12 Velocity Composites plc $12.1 M United Kingdom UK Industrials UK Aerospace & Defense
13 Harland & Wolff Group Holdings Plc United Kingdom UK Industrials UK Aerospace & Defense

Top Aerospace & Defense Companies from the United Kingdom as of Jan. 01, 2026

1. Rolls-Royce Holdings plc

Company Profile: Rolls-Royce Holdings plc
Market Cap (USD): $132.92 B
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

2. BAE Systems plc

Company Profile: BAE Systems plc
Market Cap (USD): $68.71 B
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

3. QinetiQ Group plc

Company Profile: QinetiQ Group plc
Market Cap (USD): $3.19 B
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

4. Ultra Electronics Holdings plc

Company Profile: Ultra Electronics Holdings plc
Market Cap (USD): $3.04 B (July 1, 2022)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

5. Chemring Group plc

Company Profile: Chemring Group plc
Market Cap (USD): $1.72 B
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

6. Senior plc

Company Profile: Senior plc
Market Cap (USD): $1.12 B
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

7. Avon Protection plc

Company Profile: Avon Protection plc
Market Cap (USD): $752.4 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

8. Avon Rubber plc

Company Profile: Avon Rubber plc
Market Cap (USD): $718.8 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

9. Cohort plc

Company Profile: Cohort plc
Market Cap (USD): $552.5 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

10. MS INTERNATIONAL plc

Company Profile: MS INTERNATIONAL plc
Market Cap (USD): $318.5 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

11. Amedeo Air Four Plus Ltd

Company Profile: Amedeo Air Four Plus Ltd
Market Cap (USD): $230.3 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

12. Velocity Composites plc

Company Profile: Velocity Composites plc
Market Cap (USD): $12.1 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

13. Harland & Wolff Group Holdings Plc

Company Profile: Harland & Wolff Group Holdings Plc
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

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