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
991 First Property Group plc $37.3 M United Kingdom UK Real Estate UK Real Estate Services
992 Insig AI Plc $37.0 M United Kingdom UK Technology UK Software—Infrastructure
993 Emmerson plc $35.4 M United Kingdom UK Basic Materials UK Agricultural Inputs
994 Renalytix AI plc $34.7 M United Kingdom UK Healthcare UK Diagnostics & Research
995 Hornby plc $34.6 M

(Jan. 1, 2024)

 United Kingdom UK Consumer Discretionary UK Specialty Retail
996 Predator Oil & Gas Holdings plc $34.2 M United Kingdom UK Energy UK Oil & Gas E&P
997 Novacyt SA $34.2 M United Kingdom UK Healthcare UK Diagnostics & Research
998 CyanConnode Holdings plc $33.6 M United Kingdom UK Technology UK Communication Equipment
999 M Winkworth plc $33.1 M United Kingdom UK Real Estate UK Real Estate Services
1000 Pebble Beach Systems Group plc $32.7 M United Kingdom UK Technology UK Communication Equipment

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

991. First Property Group plc

Company Profile: First Property Group plc
Market Cap (USD): $37.3 M
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

992. Insig AI Plc

Company Profile: Insig AI Plc
Market Cap (USD): $37.0 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Infrastructure

993. Emmerson plc

Company Profile: Emmerson plc
Market Cap (USD): $35.4 M
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Agricultural Inputs

994. Renalytix AI plc

Company Profile: Renalytix AI plc
Market Cap (USD): $34.7 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

995. 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

996. Predator Oil & Gas Holdings plc

Company Profile: Predator Oil & Gas Holdings plc
Market Cap (USD): $34.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

997. Novacyt SA

Company Profile: Novacyt SA
Market Cap (USD): $34.2 M
Country: United Kingdom
Sector: UK Healthcare
Industry: UK Diagnostics & Research

998. CyanConnode Holdings plc

Company Profile: CyanConnode Holdings plc
Market Cap (USD): $33.6 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

999. M Winkworth plc

Company Profile: M Winkworth plc
Market Cap (USD): $33.1 M
Country: United Kingdom
Sector: UK Real Estate
Industry: UK Real Estate Services

1000. Pebble Beach Systems Group plc

Company Profile: Pebble Beach Systems Group plc
Market Cap (USD): $32.7 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

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