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 Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
991 Akari Therapeutics, Plc $37.6 M United Kingdom UK Healthcare UK Biotechnology
992 Ariana Resources plc $37.4 M United Kingdom UK Basic Materials UK Gold
993 Sareum Holdings plc $37.3 M United Kingdom UK Healthcare UK Biotechnology
994 Vianet Group plc $37.2 M United Kingdom UK Industrials UK Specialty Business Services
995 Manx Financial Group plc $37.0 M United Kingdom UK Financials UK Banks—Regional
996 Maintel Holdings plc $36.9 M United Kingdom UK Technology UK Communication Equipment
997 M Winkworth plc $36.6 M United Kingdom UK Real Estate UK Real Estate Services
998 Petra Diamonds Limited $35.6 M United Kingdom UK Basic Materials UK Other Precious Metals & Mining
999 GetBusy plc $35.5 M United Kingdom UK Technology UK Software—Application
1000 Hornby plc $34.6 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Discretionary UK Specialty Retail

Top Companies from the United Kingdom as of Jul. 01, 2025

991. Akari Therapeutics, Plc

Company Profile: Akari Therapeutics, Plc
Market Cap (USD): $37.6 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

992. Ariana Resources plc

Company Profile: Ariana Resources plc
Market Cap (USD): $37.4 M
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Gold

993. Sareum Holdings plc

Company Profile: Sareum Holdings plc
Market Cap (USD): $37.3 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Biotechnology

994. Vianet Group plc

Company Profile: Vianet Group plc
Market Cap (USD): $37.2 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Specialty Business Services

995. Manx Financial Group plc

Company Profile: Manx Financial Group plc
Market Cap (USD): $37.0 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Banks—Regional

996. Maintel Holdings plc

Company Profile: Maintel Holdings plc
Market Cap (USD): $36.9 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

997. M Winkworth plc

Company Profile: M Winkworth plc
Market Cap (USD): $36.6 M
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

998. Petra Diamonds Limited

Company Profile: Petra Diamonds Limited
Market Cap (USD): $35.6 M
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Other Precious Metals & Mining

999. GetBusy plc

Company Profile: GetBusy plc
Market Cap (USD): $35.5 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

1000. Hornby plc

Company Profile: Hornby plc
Market Cap (USD): $34.6 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Specialty Retail

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