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
451 Lookers plc $580.6 M

(July 1, 2023)

 United Kingdom UK Consumer Discretionary UK Auto & Truck Dealerships
452 AVI Japan Opportunity Trust plc $576.0 M United Kingdom UK Financials UK Asset Management
453 North American Income Trust (The) plc $572.1 M United Kingdom UK Financials UK Asset Management
454 Pacific Assets Trust $565.9 M United Kingdom UK Financials UK Asset Management
455 Costain Group plc $564.3 M United Kingdom UK Industrials UK Engineering & Construction
456 JLEN Environmental Assets Group Limited $564.2 M United Kingdom UK Financials UK Asset Management
457 Ceres Power Holdings plc $560.2 M United Kingdom UK Industrials UK Electrical Equipment & Parts
458 Bluefield Solar Income Fund Limited $557.8 M United Kingdom UK Financials UK Asset Management
459 NCC Group plc $554.4 M United Kingdom UK Technology UK Software—Application
460 BMO Private Equity Trust plc $553.3 M United Kingdom UK Financials UK Asset Management
461 Cohort plc $552.5 M United Kingdom UK Industrials UK Aerospace & Defense
462 Henderson European Focus Trust plc $549.9 M

(July 1, 2025)

 United Kingdom UK Financials UK Asset Management
463 Tatton Asset Management plc $549.5 M United Kingdom UK Financials UK Asset Management
464 DFS Furniture plc $544.7 M United Kingdom UK Consumer Discretionary UK Furnishings, Fixtures & Appliances
465 Elixirr International plc $543.0 M United Kingdom UK Industrials UK Consulting Services
466 PensionBee Group plc $533.1 M United Kingdom UK Technology UK Software—Application
467 Filtronic plc $530.5 M United Kingdom UK Technology UK Communication Equipment
468 Mortgage Advice Bureau (Holdings) plc $529.4 M United Kingdom UK Financials UK Mortgage Finance
469 Augean plc $527.6 M

(Oct. 1, 2021)

 United Kingdom UK Industrials UK Waste Management
470 ITM Power plc $525.4 M United Kingdom UK Technology UK Electronic Components
471 Forterra plc $524.0 M United Kingdom UK Basic Materials UK Building Materials
472 Mattioli Woods plc $523.3 M

(July 1, 2024)

 United Kingdom UK Financials UK Asset Management
473 Fidelity Asian Values plc $521.7 M United Kingdom UK Financials UK Asset Management
474 Aberdeen Asian Income Fund Limited $521.7 M United Kingdom UK Financials UK Asset Management
475 Octopus Titan VCT plc $521.1 M United Kingdom UK Financials UK Asset Management
476 Fuller, Smith & Turner plc $518.9 M United Kingdom UK Consumer Discretionary UK Restaurants
477 Bloomsbury Publishing plc $518.4 M United Kingdom UK Communication Services UK Publishing
478 Porvair plc $517.8 M United Kingdom UK Industrials UK Pollution & Treatment Controls
479 Marston's plc $515.6 M United Kingdom UK Consumer Discretionary UK Restaurants
480 Judges Scientific plc $514.7 M United Kingdom UK Technology UK Scientific & Technical Instruments

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

451. Lookers plc

Company Profile: Lookers plc
Market Cap (USD): $580.6 M (July 1, 2023)
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Auto & Truck Dealerships

452. AVI Japan Opportunity Trust plc

Company Profile: AVI Japan Opportunity Trust plc
Market Cap (USD): $576.0 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

453. North American Income Trust (The) plc

Company Profile: North American Income Trust (The) plc
Market Cap (USD): $572.1 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

454. Pacific Assets Trust

Company Profile: Pacific Assets Trust
Market Cap (USD): $565.9 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

455. Costain Group plc

Company Profile: Costain Group plc
Market Cap (USD): $564.3 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Engineering & Construction

456. JLEN Environmental Assets Group Limited

Company Profile: JLEN Environmental Assets Group Limited
Market Cap (USD): $564.2 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

457. Ceres Power Holdings plc

Company Profile: Ceres Power Holdings plc
Market Cap (USD): $560.2 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Electrical Equipment & Parts

458. Bluefield Solar Income Fund Limited

Company Profile: Bluefield Solar Income Fund Limited
Market Cap (USD): $557.8 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

459. NCC Group plc

Company Profile: NCC Group plc
Market Cap (USD): $554.4 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

460. BMO Private Equity Trust plc

Company Profile: BMO Private Equity Trust plc
Market Cap (USD): $553.3 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

461. Cohort plc

Company Profile: Cohort plc
Market Cap (USD): $552.5 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Aerospace & Defense

462. Henderson European Focus Trust plc

Company Profile: Henderson European Focus Trust plc
Market Cap (USD): $549.9 M (July 1, 2025)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

463. Tatton Asset Management plc

Company Profile: Tatton Asset Management plc
Market Cap (USD): $549.5 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

464. DFS Furniture plc

Company Profile: DFS Furniture plc
Market Cap (USD): $544.7 M
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Furnishings, Fixtures & Appliances

465. Elixirr International plc

Company Profile: Elixirr International plc
Market Cap (USD): $543.0 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Consulting Services

466. PensionBee Group plc

Company Profile: PensionBee Group plc
Market Cap (USD): $533.1 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Software—Application

467. Filtronic plc

Company Profile: Filtronic plc
Market Cap (USD): $530.5 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Communication Equipment

468. Mortgage Advice Bureau (Holdings) plc

Company Profile: Mortgage Advice Bureau (Holdings) plc
Market Cap (USD): $529.4 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Mortgage Finance

469. Augean plc

Company Profile: Augean plc
Market Cap (USD): $527.6 M (Oct. 1, 2021)
Country: United Kingdom
Sector: UK Industrials
Industry: UK Waste Management

470. ITM Power plc

Company Profile: ITM Power plc
Market Cap (USD): $525.4 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Electronic Components

471. Forterra plc

Company Profile: Forterra plc
Market Cap (USD): $524.0 M
Country: United Kingdom
Sector: UK Basic Materials
Industry: UK Building Materials

472. Mattioli Woods plc

Company Profile: Mattioli Woods plc
Market Cap (USD): $523.3 M (July 1, 2024)
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

473. Fidelity Asian Values plc

Company Profile: Fidelity Asian Values plc
Market Cap (USD): $521.7 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

474. Aberdeen Asian Income Fund Limited

Company Profile: Aberdeen Asian Income Fund Limited
Market Cap (USD): $521.7 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

475. Octopus Titan VCT plc

Company Profile: Octopus Titan VCT plc
Market Cap (USD): $521.1 M
Country: United Kingdom
Sector: UK Financials
Industry: UK Asset Management

476. Fuller, Smith & Turner plc

Company Profile: Fuller, Smith & Turner plc
Market Cap (USD): $518.9 M
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

477. Bloomsbury Publishing plc

Company Profile: Bloomsbury Publishing plc
Market Cap (USD): $518.4 M
Country: United Kingdom
Sector: UK Communication Services
Industry: UK Publishing

478. Porvair plc

Company Profile: Porvair plc
Market Cap (USD): $517.8 M
Country: United Kingdom
Sector: UK Industrials
Industry: UK Pollution & Treatment Controls

479. Marston's plc

Company Profile: Marston's plc
Market Cap (USD): $515.6 M
Country: United Kingdom
Sector: UK Consumer Discretionary
Industry: UK Restaurants

480. Judges Scientific plc

Company Profile: Judges Scientific plc
Market Cap (USD): $514.7 M
Country: United Kingdom
Sector: UK Technology
Industry: UK Scientific & Technical Instruments

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