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FTSE AIM UK 50
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Top FTSE AIM UK 50 Companies by Market Cap and Stocks in 2025

This is the list of the largest public listed companies in the FTSE AIM UK 50 index ranked by market capitalization, together with links to their reference stock, sector and industry.

FTSE AIM UK 50 Chart & Analysis

Top FTSE AIM UK 50 Companies Ranking by Market Cap as of July 1, 2025

Ranking Company Stock Market Cap (USD) Country Sector Industry
1 Jet2 plc JET2 wb_incandescent $5.05 B United Kingdom UK Consumer Discretionary UK Travel Services
2 Abcam plc ABC wb_incandescent $3.58 B

(Dec. 1, 2022)

 United Kingdom UK Healthcare UK Biotechnology
3 Keywords Studios plc KWS wb_incandescent $2.42 B

(July 1, 2024)

 Ireland Irish Communication Services Irish Electronic Gaming & Multimedia
4 Secure Income REIT Ord SIR wb_incandescent $1.81 B

(July 1, 2022)

 United Kingdom UK Real Estate UK REIT—Diversified
5 Blue Prism Group plc PRSM wb_incandescent $1.66 B

(March 1, 2022)

 United Kingdom UK Technology UK Software—Infrastructure
6 Smart Metering Systems plc SMS wb_incandescent $1.65 B

(Jan. 1, 2024)

 United Kingdom UK Industrials UK Electrical Equipment & Parts
7 Clinigen Group plc CLIN wb_incandescent $1.61 B

(April 1, 2022)

 United Kingdom UK Healthcare UK Medical Distribution
8 Fevertree Drinks plc FEVR wb_incandescent $1.58 B United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
9 Gamma Communications plc GAMA wb_incandescent $1.43 B United Kingdom UK Communication Services UK Telecom Services
10 Pan African Resources plc PAF wb_incandescent $1.37 B South Africa South African Basic Materials South African Gold
11 CVS Group plc CVSG wb_incandescent $1.19 B United Kingdom UK Consumer Discretionary UK Personal Services
12 Sumo Group plc SUMO wb_incandescent $1.18 B

(Jan. 1, 2022)

 United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
13 EMIS Group plc EMIS wb_incandescent $1.13 B

(July 1, 2023)

 United Kingdom UK Healthcare UK Health Information Services
14 CareTech Holdings plc CTH wb_incandescent $978.5 M

(Sept. 1, 2022)

 United Kingdom UK Healthcare UK Medical Care Facilities
15 James Halstead plc JHD wb_incandescent $963.9 M United Kingdom UK Industrials UK Building Products & Equipment
16 Learning Technologies Group plc LTG wb_incandescent $961.5 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Staples UK Education & Training Services
17 Volex plc VLX wb_incandescent $933.2 M United Kingdom UK Industrials UK Electrical Equipment & Parts
18 Renew Holdings plc RNWH wb_incandescent $886.9 M United Kingdom UK Industrials UK Engineering & Construction
19 Johnson Service Group plc JSG wb_incandescent $882.9 M United Kingdom UK Industrials UK Specialty Business Services
20 Serica Energy plc SQZ wb_incandescent $863.3 M United Kingdom UK Energy UK Oil & Gas E&P
21 M.P. Evans Group plc MPE wb_incandescent $832.1 M United Kingdom UK Consumer Staples UK Farm Products
22 ITM Power plc ITM wb_incandescent $796.9 M United Kingdom UK Technology UK Electronic Components
23 Draper Esprit plc GROW wb_incandescent $785.7 M United Kingdom UK Financials UK Asset Management
24 GB Group plc GBG wb_incandescent $777.5 M United Kingdom UK Technology UK Software—Application
25 FD Technologies plc FDP wb_incandescent $744.1 M United Kingdom UK Technology UK Information Technology Services
26 Nichols plc NICL wb_incandescent $736.4 M United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
27 Mortgage Advice Bureau (Holdings) plc MAB1 wb_incandescent $704.0 M United Kingdom UK Financials UK Mortgage Finance
28 Young & Co.'s Brewery, plc YNGN wb_incandescent $694.0 M United Kingdom UK Consumer Discretionary UK Restaurants
29 Young & Co.'s Brewery, plc YNGA wb_incandescent $694.0 M United Kingdom UK Consumer Discretionary UK Restaurants
30 Warehouse REIT plc WHR wb_incandescent $649.5 M United Kingdom UK Real Estate UK REIT—Industrial

Top FTSE AIM UK 50 Companies Ranking by Market Cap as of July 1, 2025

1. Jet2 plc

Company Profile: Jet2 plc
Market Cap (USD): $5.05 B
Stock: JET2 wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Travel Services

2. Abcam plc

Company Profile: Abcam plc
Market Cap (USD): $3.58 B (Dec. 1, 2022)
Stock: ABC wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

3. Keywords Studios plc

Company Profile: Keywords Studios plc
Market Cap (USD): $2.42 B (July 1, 2024)
Stock: KWS wb_incandescent
Country: Ireland
Sector: Irish Communication Services
Industry: Irish Electronic Gaming & Multimedia

4. Secure Income REIT Ord

Company Profile: Secure Income REIT Ord
Market Cap (USD): $1.81 B (July 1, 2022)
Stock: SIR wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Diversified

5. Blue Prism Group plc

Company Profile: Blue Prism Group plc
Market Cap (USD): $1.66 B (March 1, 2022)
Stock: PRSM wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

6. Smart Metering Systems plc

Company Profile: Smart Metering Systems plc
Market Cap (USD): $1.65 B (Jan. 1, 2024)
Stock: SMS wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

7. Clinigen Group plc

Company Profile: Clinigen Group plc
Market Cap (USD): $1.61 B (April 1, 2022)
Stock: CLIN wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Distribution

8. Fevertree Drinks plc

Company Profile: Fevertree Drinks plc
Market Cap (USD): $1.58 B
Stock: FEVR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

9. Gamma Communications plc

Company Profile: Gamma Communications plc
Market Cap (USD): $1.43 B
Stock: GAMA wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

10. Pan African Resources plc

Company Profile: Pan African Resources plc
Market Cap (USD): $1.37 B
Stock: PAF wb_incandescent
Country: South Africa
Sector: South African Basic Materials
Industry: South African Gold

11. CVS Group plc

Company Profile: CVS Group plc
Market Cap (USD): $1.19 B
Stock: CVSG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Personal Services

12. Sumo Group plc

Company Profile: Sumo Group plc
Market Cap (USD): $1.18 B (Jan. 1, 2022)
Stock: SUMO wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Electronic Gaming & Multimedia

13. EMIS Group plc

Company Profile: EMIS Group plc
Market Cap (USD): $1.13 B (July 1, 2023)
Stock: EMIS wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Health Information Services

14. CareTech Holdings plc

Company Profile: CareTech Holdings plc
Market Cap (USD): $978.5 M (Sept. 1, 2022)
Stock: CTH wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Care Facilities

15. James Halstead plc

Company Profile: James Halstead plc
Market Cap (USD): $963.9 M
Stock: JHD wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Building Products & Equipment

16. Learning Technologies Group plc

Company Profile: Learning Technologies Group plc
Market Cap (USD): $961.5 M (Jan. 1, 2025)
Stock: LTG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Education & Training Services

17. Volex plc

Company Profile: Volex plc
Market Cap (USD): $933.2 M
Stock: VLX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

18. Renew Holdings plc

Company Profile: Renew Holdings plc
Market Cap (USD): $886.9 M
Stock: RNWH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

19. Johnson Service Group plc

Company Profile: Johnson Service Group plc
Market Cap (USD): $882.9 M
Stock: JSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

20. Serica Energy plc

Company Profile: Serica Energy plc
Market Cap (USD): $863.3 M
Stock: SQZ wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

21. M.P. Evans Group plc

Company Profile: M.P. Evans Group plc
Market Cap (USD): $832.1 M
Stock: MPE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Farm Products

22. ITM Power plc

Company Profile: ITM Power plc
Market Cap (USD): $796.9 M
Stock: ITM wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

23. Draper Esprit plc

Company Profile: Draper Esprit plc
Market Cap (USD): $785.7 M
Stock: GROW wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

24. GB Group plc

Company Profile: GB Group plc
Market Cap (USD): $777.5 M
Stock: GBG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

25. FD Technologies plc

Company Profile: FD Technologies plc
Market Cap (USD): $744.1 M
Stock: FDP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

26. Nichols plc

Company Profile: Nichols plc
Market Cap (USD): $736.4 M
Stock: NICL wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

27. Mortgage Advice Bureau (Holdings) plc

Company Profile: Mortgage Advice Bureau (Holdings) plc
Market Cap (USD): $704.0 M
Stock: MAB1 wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Mortgage Finance

28. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $694.0 M
Stock: YNGN wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

29. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $694.0 M
Stock: YNGA wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

30. Warehouse REIT plc

Company Profile: Warehouse REIT plc
Market Cap (USD): $649.5 M
Stock: WHR wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Industrial

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