Largest companies in United Kingdom
We track 1 United Kingdom stock index (FTSE 100), covering 102 companies.
Largest United Kingdom companies by market cap
Market caps from each exchange's listings, converted to US dollars at the same day's exchange rates, as of 2026-10-09.
| # | Company | Market cap | Indexes |
|---|---|---|---|
| 1 | HSBC | $317.8 billion | 3 |
| 2 | Shell plc | $288.1 billion | 3 |
| 3 | AstraZeneca | $249.9 billion | 3 |
| 4 | Arm Holdings | $227.6 billion | 2 |
| 5 | Rio Tinto | $153.6 billion | 2 |
| 6 | Rolls-Royce Holdings | $150.2 billion | 1 |
| 7 | Unilever | $134.3 billion | 3 |
| 8 | BP | $120.6 billion | 2 |
| 9 | British American Tobacco | $120.3 billion | 3 |
| 10 | GSK | $94.3 billion | 2 |
| 11 | Lloyds Banking Group | $77.6 billion | 2 |
| 12 | National Grid plc | $77.1 billion | 1 |
| 13 | Barclays | $76.5 billion | 2 |
| 14 | BAE Systems | $72.1 billion | 1 |
| 15 | NatWest Group | $68.0 billion | 2 |
| 16 | RELX | $62.7 billion | 3 |
| 17 | Standard Chartered | $61.4 billion | 1 |
| 18 | Anglo American plc | $59.4 billion | 2 |
| 19 | London Stock Exchange Group | $55.4 billion | 1 |
| 20 | Compass Group | $53.0 billion | 1 |
| 21 | Antofagasta plc | $49.3 billion | 1 |
| 22 | Coca-Cola Europacific Partners | $49.0 billion | 3 |
| 23 | Diageo | $48.7 billion | 2 |
| 24 | Reckitt | $43.4 billion | 1 |
| 25 | Tesco | $41.9 billion | 1 |
| 26 | Haleon | $41.0 billion | 2 |
| 27 | SSE plc | $39.7 billion | 1 |
| 28 | Vodafone Group | $37.0 billion | 2 |
| 29 | Experian | $31.1 billion | 1 |
| 30 | Prudential plc | $29.4 billion | 1 |
| 31 | Fresnillo plc | $27.2 billion | 1 |
| 32 | Aviva | $27.1 billion | 1 |
| 33 | Imperial Brands | $26.6 billion | 1 |
| 34 | IHG Hotels & Resorts | $23.3 billion | 1 |
| 35 | Scottish Mortgage Investment Trust | $22.8 billion | 1 |
| 36 | Next plc | $22.4 billion | 1 |
| 37 | Legal & General | $20.5 billion | 1 |
| 38 | Halma plc | $17.8 billion | 1 |
| 39 | Associated British Foods | $17.2 billion | 1 |
| 40 | Segro | $16.6 billion | 1 |
| 41 | Informa | $16.3 billion | 1 |
| 42 | Admiral Group | $14.6 billion | 1 |
| 43 | United Utilities | $14.2 billion | 1 |
| 44 | Airtel Africa | $14.2 billion | 1 |
| 45 | Diploma | $13.9 billion | 1 |
| 46 | Endeavour Mining | $13.3 billion | 1 |
| 47 | Sage Group | $12.8 billion | 1 |
| 48 | Severn Trent | $12.5 billion | 1 |
| 49 | Intertek | $12.0 billion | 1 |
| 50 | Smith & Nephew | $11.5 billion | 2 |
| 51 | Bunzl | $11.5 billion | 1 |
| 52 | Standard Life | $11.3 billion | 1 |
| 53 | Marks & Spencer | $11.1 billion | 1 |
| 54 | Polar Capital Technology Trust | $10.3 billion | 1 |
| 55 | Pearson plc | $10.3 billion | 2 |
| 56 | Rentokil Initial | $10.2 billion | 2 |
| 57 | Smiths Group | $10.2 billion | 1 |
| 58 | Sainsbury's | $9.8 billion | 1 |
| 59 | M&G | $9.7 billion | 1 |
| 60 | IMI | $9.7 billion | 1 |
| 61 | Weir | $9.1 billion | 1 |
| 62 | Centrica | $8.9 billion | 1 |
| 63 | F & C Investment Trust | $8.7 billion | 1 |
| 64 | Hiscox | $7.8 billion | 1 |
| 65 | Computacenter | $7.8 billion | 1 |
| 66 | Metlen Energy & Metals | $7.7 billion | 1 |
| 67 | Melrose Industries | $7.3 billion | 1 |
| 68 | Games Workshop | $7.3 billion | 1 |
| 69 | Lion Finance Group | $7.1 billion | 1 |
| 70 | Spirax Group | $7.1 billion | 1 |
| 71 | Kingfisher plc | $7.1 billion | 1 |
| 72 | ICG | $6.9 billion | 1 |
| 73 | St. James's Place | $6.8 billion | 1 |
| 74 | Alliance Witan | $6.8 billion | 1 |
| 75 | EasyJet | $6.8 billion | 1 |
| 76 | Land Securities | $6.7 billion | 1 |
| 77 | Allfunds Group | $6.6 billion | 1 |
| 78 | Croda International | $6.3 billion | 1 |
| 79 | Ithaca Energy | $6.2 billion | 1 |
| 80 | Babcock International | $6.0 billion | 1 |
| 81 | Aberdeen Group | $5.7 billion | 1 |
| 82 | LondonMetric Property | $5.6 billion | 1 |
| 83 | Convatec | $5.6 billion | 1 |
| 84 | Howdens Joinery | $5.5 billion | 1 |
| 85 | Whitbread | $5.5 billion | 1 |
| 86 | Balfour Beatty | $5.5 billion | 1 |
| 87 | Tritax Big Box REIT | $5.5 billion | 1 |
| 88 | Barratt Redrow | $5.3 billion | 1 |
| 89 | British Land | $5.3 billion | 1 |
| 90 | JD Sports | $5.3 billion | 1 |
| 91 | Autotrader Group | $5.0 billion | 1 |
| 92 | Burberry Group | $4.9 billion | 1 |
| 93 | IG Group | $4.3 billion | 1 |
| 94 | HBX Group | $2.1 billion | 1 |
| 95 | Genius Sports Ltd | $1.6 billion | 2 |
| 96 | Navigator Holdings | $1.3 billion | 2 |
| 97 | Ferrari Group | $762 million | 1 |
| 98 | Accsys | $180 million | 1 |
Indexes
- FTSE 100: 100 companies
Companies in the most indexes
| Company | Indexes | Member of |
|---|---|---|
| AstraZeneca | 3 | OMX Stockholm 30, FTSE 100, NYSE Composite |
| British American Tobacco | 3 | FTSE 100, JSE Top 40, NYSE Composite |
| Coca-Cola Europacific Partners | 3 | FTSE 100, Nasdaq-100, Nasdaq Composite |
| HSBC | 3 | FTSE 100, Hang Seng, NYSE Composite |
| RELX | 3 | AEX, FTSE 100, NYSE Composite |
| Shell plc | 3 | AEX, FTSE 100, NYSE Composite |
| Unilever | 3 | AEX, FTSE 100, NYSE Composite |
| Anglo American plc | 2 | JSE Top 40, FTSE 100 |
| BP | 2 | FTSE 100, NYSE Composite |
| Barclays | 2 | FTSE 100, NYSE Composite |
| Diageo | 2 | FTSE 100, NYSE Composite |
| GSK | 2 | FTSE 100, NYSE Composite |
| Haleon | 2 | FTSE 100, NYSE Composite |
| Lloyds Banking Group | 2 | FTSE 100, NYSE Composite |
| NatWest Group | 2 | FTSE 100, NYSE Composite |
| Pearson plc | 2 | FTSE 100, NYSE Composite |
| Rentokil Initial | 2 | FTSE 100, NYSE Composite |
| Rio Tinto | 2 | FTSE 100, NYSE Composite |
| Smith & Nephew | 2 | FTSE 100, NYSE Composite |
| Vodafone Group | 2 | FTSE 100, Nasdaq Composite |
Where United Kingdom sits on the map
Lit tiles are the United Kingdom indexes we track.
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