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FTSE AIM UK 50
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Top FTSE AIM UK 50 Companies by Market Cap and Stocks in 2026

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 Jan. 1, 2026

Ranking Company Stock Market Cap (USD) Country Sector Industry
1 Abcam plc ABC $3.58 B

(Dec. 1, 2022)

 United Kingdom UK Healthcare UK Biotechnology
2 Jet2 plc JET2 $3.56 B United Kingdom UK Consumer Discretionary UK Travel Services
3 Pan African Resources plc PAF $2.91 B South Africa South African Basic Materials South African Gold
4 Keywords Studios plc KWS $2.42 B

(July 1, 2024)

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

(July 1, 2022)

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

(March 1, 2022)

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

(Jan. 1, 2024)

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

(April 1, 2022)

 United Kingdom UK Healthcare UK Medical Distribution
9 Fevertree Drinks plc FEVR $1.26 B United Kingdom UK Consumer Staples UK Beverages—Non-Alcoholic
10 CVS Group plc CVSG $1.22 B United Kingdom UK Consumer Discretionary UK Personal Services
11 Draper Esprit plc GROW $1.19 B United Kingdom UK Financials UK Asset Management
12 Sumo Group plc SUMO $1.18 B

(Jan. 1, 2022)

 United Kingdom UK Communication Services UK Electronic Gaming & Multimedia
13 Gamma Communications plc GAMA $1.13 B United Kingdom UK Communication Services UK Telecom Services
14 EMIS Group plc EMIS $1.13 B

(July 1, 2023)

 United Kingdom UK Healthcare UK Health Information Services
15 Volex plc VLX $1.02 B United Kingdom UK Industrials UK Electrical Equipment & Parts
16 CareTech Holdings plc CTH $978.5 M

(Sept. 1, 2022)

 United Kingdom UK Healthcare UK Medical Care Facilities
17 Learning Technologies Group plc LTG $961.5 M

(Jan. 1, 2025)

 United Kingdom UK Consumer Staples UK Education & Training Services
18 Renew Holdings plc RNWH $945.8 M United Kingdom UK Industrials UK Engineering & Construction
19 Serica Energy plc SQZ $937.6 M United Kingdom UK Energy UK Oil & Gas E&P
20 M.P. Evans Group plc MPE $885.7 M United Kingdom UK Consumer Staples UK Farm Products
21 GB Group plc GBG $784.7 M United Kingdom UK Technology UK Software—Application
22 James Halstead plc JHD $774.1 M United Kingdom UK Industrials UK Building Products & Equipment
23 FD Technologies plc FDP $744.1 M

(July 1, 2025)

 United Kingdom UK Technology UK Information Technology Services
24 Polar Capital Holdings plc POLR $685.1 M United Kingdom UK Financials UK Asset Management
25 Johnson Service Group plc JSG $677.0 M United Kingdom UK Industrials UK Specialty Business Services
26 Warehouse REIT plc WHR $649.5 M

(July 1, 2025)

 United Kingdom UK Real Estate UK REIT—Industrial
27 Advanced Medical Solutions Group plc AMS $636.0 M United Kingdom UK Healthcare UK Medical Instruments & Supplies
28 Young & Co.'s Brewery, plc YNGN $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
29 Young & Co.'s Brewery, plc YNGA $618.5 M United Kingdom UK Consumer Discretionary UK Restaurants
30 Silence Therapeutics plc SLN $588.4 M

(Nov. 1, 2021)

 United Kingdom UK Healthcare UK Biotechnology

Top FTSE AIM UK 50 Companies Ranking by Market Cap as of Jan. 1, 2026

1. 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

2. Jet2 plc

Company Profile: Jet2 plc
Market Cap (USD): $3.56 B
Stock: JET2 wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Travel Services

3. Pan African Resources plc

Company Profile: Pan African Resources plc
Market Cap (USD): $2.91 B
Stock: PAF wb_incandescent
Country: South Africa
Sector: South African Basic Materials
Industry: South African Gold

4. 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

5. 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

6. 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

7. 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

8. 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

9. Fevertree Drinks plc

Company Profile: Fevertree Drinks plc
Market Cap (USD): $1.26 B
Stock: FEVR wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Beverages—Non-Alcoholic

10. CVS Group plc

Company Profile: CVS Group plc
Market Cap (USD): $1.22 B
Stock: CVSG wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Personal Services

11. Draper Esprit plc

Company Profile: Draper Esprit plc
Market Cap (USD): $1.19 B
Stock: GROW wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

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. Gamma Communications plc

Company Profile: Gamma Communications plc
Market Cap (USD): $1.13 B
Stock: GAMA wb_incandescent
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

14. 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

15. Volex plc

Company Profile: Volex plc
Market Cap (USD): $1.02 B
Stock: VLX wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

16. 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

17. 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

18. Renew Holdings plc

Company Profile: Renew Holdings plc
Market Cap (USD): $945.8 M
Stock: RNWH wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

19. Serica Energy plc

Company Profile: Serica Energy plc
Market Cap (USD): $937.6 M
Stock: SQZ wb_incandescent
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

20. M.P. Evans Group plc

Company Profile: M.P. Evans Group plc
Market Cap (USD): $885.7 M
Stock: MPE wb_incandescent
Country: United Kingdom
Sector: UK Consumer Staples
Industry: UK Farm Products

21. GB Group plc

Company Profile: GB Group plc
Market Cap (USD): $784.7 M
Stock: GBG wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

22. James Halstead plc

Company Profile: James Halstead plc
Market Cap (USD): $774.1 M
Stock: JHD wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Building Products & Equipment

23. FD Technologies plc

Company Profile: FD Technologies plc
Market Cap (USD): $744.1 M (July 1, 2025)
Stock: FDP wb_incandescent
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

24. Polar Capital Holdings plc

Company Profile: Polar Capital Holdings plc
Market Cap (USD): $685.1 M
Stock: POLR wb_incandescent
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

25. Johnson Service Group plc

Company Profile: Johnson Service Group plc
Market Cap (USD): $677.0 M
Stock: JSG wb_incandescent
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

26. Warehouse REIT plc

Company Profile: Warehouse REIT plc
Market Cap (USD): $649.5 M (July 1, 2025)
Stock: WHR wb_incandescent
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Industrial

27. Advanced Medical Solutions Group plc

Company Profile: Advanced Medical Solutions Group plc
Market Cap (USD): $636.0 M
Stock: AMS wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Instruments & Supplies

28. Young & Co.'s Brewery, plc

Company Profile: Young & Co.'s Brewery, plc
Market Cap (USD): $618.5 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): $618.5 M
Stock: YNGA wb_incandescent
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

30. Silence Therapeutics plc

Company Profile: Silence Therapeutics plc
Market Cap (USD): $588.4 M (Nov. 1, 2021)
Stock: SLN wb_incandescent
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

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