United Kingdom

Top 1000 largest UK Companies by Market Cap

This is the list of the largest public listed companies from the United Kingdom by market capitalization with links to their reference stock, sector and industry.

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

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Rank Company Market Cap (USD) Country Sector Industry
931 J. Smart & Co. (Contractors) plc $64.2 M

(July 1, 2025)

 United Kingdom UK Industrials UK Engineering & Construction
932 AdEPT Technology Group plc $63.8 M

(April 1, 2023)

 United Kingdom UK Communication Services UK Telecom Services
933 Upland Resources Limited $63.5 M United Kingdom UK Energy UK Oil & Gas E&P
934 Horizonte Minerals plc $61.8 M

(Jan. 1, 2024)

 United Kingdom UK Basic Materials UK Other Industrial Metals & Mining
935 Quixant plc $60.4 M

(July 1, 2025)

 United Kingdom UK Technology UK Computer Hardware
936 Escape Hunt plc $60.2 M

(Dec. 1, 2021)

 United Kingdom UK Consumer Discretionary UK Leisure
937 ULS Technology plc $59.6 M

(June 1, 2022)

 United Kingdom UK Communication Services UK Internet Content & Information
938 Jersey Oil and Gas plc $59.1 M

(July 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
939 Calnex Solutions plc $58.7 M

(July 1, 2025)

 United Kingdom UK Technology UK Communication Equipment
940 Jupiter Green Investment Trust PLC $58.4 M

(Jan. 1, 2025)

 United Kingdom UK Financials UK Asset Management
941 SkinBioTherapeutics plc $58.3 M United Kingdom UK Healthcare UK Biotechnology
942 Highcroft Investments plc $58.3 M

(Jan. 1, 2024)

 United Kingdom UK Real Estate UK REIT—Diversified
943 Billington Holdings plc $58.3 M United Kingdom UK Industrials UK Engineering & Construction
944 Grafenia plc $57.6 M

(July 1, 2025)

 United Kingdom UK Industrials UK Specialty Business Services
945 Petropavlovsk plc $57.5 M

(July 1, 2022)

 United Kingdom UK Basic Materials UK Gold
946 C4X Discovery Holdings plc $57.3 M

(Jan. 1, 2024)

 United Kingdom UK Healthcare UK Biotechnology
947 GetBusy plc $57.3 M United Kingdom UK Technology UK Software—Application
948 Flowtech Fluidpower plc $57.0 M

(July 1, 2025)

 United Kingdom UK Industrials UK Industrial Distribution
949 Windar Photonics plc $56.4 M United Kingdom UK Technology UK Electronic Components
950 Creo Medical Limited $56.3 M United Kingdom UK Healthcare UK Medical Devices
951 Best of the Best plc $55.8 M

(July 1, 2023)

 United Kingdom UK Consumer Discretionary UK Gambling
952 Kooth plc $55.8 M United Kingdom UK Communication Services UK Internet Content & Information
953 EPE Special Opportunities Limited $54.9 M

(July 1, 2025)

 United Kingdom UK Financials UK Asset Management
954 Hummingbird Resources plc $54.6 M

(Jan. 1, 2025)

 United Kingdom UK Basic Materials UK Gold
955 AssetCo plc $54.5 M

(Jan. 1, 2025)

 United Kingdom UK Industrials UK Security & Protection Services
956 VPC Specialty Lending Investments plc $54.3 M

(July 1, 2025)

 United Kingdom UK Financials UK Asset Management
957 OnTheMarket plc $53.7 M

(July 1, 2023)

 United Kingdom UK Communication Services UK Internet Content & Information
958 K3 Business Technology Group plc $53.6 M

(July 1, 2025)

 United Kingdom UK Technology UK Information Technology Services
959 River and Mercantile Group plc $53.3 M

(June 1, 2022)

 United Kingdom UK Financials UK Asset Management
960 Diurnal Group plc $53.3 M

(Oct. 1, 2022)

 United Kingdom UK Healthcare UK Drug Manufacturers—Specialty & Generic

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

931. J. Smart & Co. (Contractors) plc

Company Profile: J. Smart & Co. (Contractors) plc
Market Cap (USD): $64.2 M (July 1, 2025)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

932. AdEPT Technology Group plc

Company Profile: AdEPT Technology Group plc
Market Cap (USD): $63.8 M (April 1, 2023)
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Telecom Services

933. Upland Resources Limited

Company Profile: Upland Resources Limited
Market Cap (USD): $63.5 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

934. Horizonte Minerals plc

Company Profile: Horizonte Minerals plc
Market Cap (USD): $61.8 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Industrial Metals & Mining

935. Quixant plc

Company Profile: Quixant plc
Market Cap (USD): $60.4 M (July 1, 2025)
Country: United Kingdom
Sector: UK Technology
Industry: UK Computer Hardware

936. Escape Hunt plc

Company Profile: Escape Hunt plc
Market Cap (USD): $60.2 M (Dec. 1, 2021)
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Leisure

937. ULS Technology plc

Company Profile: ULS Technology plc
Market Cap (USD): $59.6 M (June 1, 2022)
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Internet Content & Information

938. Jersey Oil and Gas plc

Company Profile: Jersey Oil and Gas plc
Market Cap (USD): $59.1 M (July 1, 2025)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

939. Calnex Solutions plc

Company Profile: Calnex Solutions plc
Market Cap (USD): $58.7 M (July 1, 2025)
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

940. Jupiter Green Investment Trust PLC

Company Profile: Jupiter Green Investment Trust PLC
Market Cap (USD): $58.4 M (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

941. SkinBioTherapeutics plc

Company Profile: SkinBioTherapeutics plc
Market Cap (USD): $58.3 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

942. Highcroft Investments plc

Company Profile: Highcroft Investments plc
Market Cap (USD): $58.3 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Real Estate
Industry: UK REIT—Diversified

943. Billington Holdings plc

Company Profile: Billington Holdings plc
Market Cap (USD): $58.3 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

944. Grafenia plc

Company Profile: Grafenia plc
Market Cap (USD): $57.6 M (July 1, 2025)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

945. Petropavlovsk plc

Company Profile: Petropavlovsk plc
Market Cap (USD): $57.5 M (July 1, 2022)
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

946. C4X Discovery Holdings plc

Company Profile: C4X Discovery Holdings plc
Market Cap (USD): $57.3 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

947. GetBusy plc

Company Profile: GetBusy plc
Market Cap (USD): $57.3 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

948. Flowtech Fluidpower plc

Company Profile: Flowtech Fluidpower plc
Market Cap (USD): $57.0 M (July 1, 2025)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Industrial Distribution

949. Windar Photonics plc

Company Profile: Windar Photonics plc
Market Cap (USD): $56.4 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

950. Creo Medical Limited

Company Profile: Creo Medical Limited
Market Cap (USD): $56.3 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Medical Devices

951. Best of the Best plc

Company Profile: Best of the Best plc
Market Cap (USD): $55.8 M (July 1, 2023)
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Gambling

952. Kooth plc

Company Profile: Kooth plc
Market Cap (USD): $55.8 M
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Internet Content & Information

953. EPE Special Opportunities Limited

Company Profile: EPE Special Opportunities Limited
Market Cap (USD): $54.9 M (July 1, 2025)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

954. Hummingbird Resources plc

Company Profile: Hummingbird Resources plc
Market Cap (USD): $54.6 M (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

955. 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

956. VPC Specialty Lending Investments plc

Company Profile: VPC Specialty Lending Investments plc
Market Cap (USD): $54.3 M (July 1, 2025)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

957. OnTheMarket plc

Company Profile: OnTheMarket plc
Market Cap (USD): $53.7 M (July 1, 2023)
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Internet Content & Information

958. K3 Business Technology Group plc

Company Profile: K3 Business Technology Group plc
Market Cap (USD): $53.6 M (July 1, 2025)
Country: United Kingdom
Sector: UK Technology
Industry: UK Information Technology Services

959. River and Mercantile Group plc

Company Profile: River and Mercantile Group plc
Market Cap (USD): $53.3 M (June 1, 2022)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

960. Diurnal Group plc

Company Profile: Diurnal Group plc
Market Cap (USD): $53.3 M (Oct. 1, 2022)
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Drug Manufacturers—Specialty & Generic

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