United Kingdom

Top 87 largest UK Companies in the Energy sector by Market Cap

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

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

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Rank Company Market Cap (USD) Country Sector Industry
61 Coro Energy plc $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
62 Ascent Resources plc $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
63 Getech Group plc $4.2 M United Kingdom UK Energy UK Oil & Gas Equipment & Services
64 TomCo Energy plc $4.2 M United Kingdom UK Energy UK Oil & Gas Drilling
65 Deltic Energy plc $3.9 M United Kingdom UK Energy UK Oil & Gas E&P
66 Scirocco Energy plc $3.7 M

(Jan. 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
67 Gunsynd plc $3.1 M United Kingdom UK Energy UK Oil & Gas E&P
68 Enteq Upstream plc $1.6 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas Equipment & Services
69 ADM Energy plc $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
70 SDX Energy plc $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
71 Nostra Terra Oil and Gas Company plc $748,207 United Kingdom UK Energy UK Oil & Gas E&P
72 Petrofac Limited $285,296

(July 1, 2025)

 United Kingdom UK Energy UK Oil & Gas Equipment & Services
73 Angus Energy plc $161,074 United Kingdom UK Energy UK Oil & Gas E&P
74 Anglo African Oil & Gas plc United Kingdom UK Energy UK Oil & Gas Drilling
75 Sterling Energy plc United Kingdom UK Energy UK Oil & Gas E&P
76 Ithaca Energy plc United Kingdom UK Energy UK Oil & Gas E&P
77 Path Investments plc United Kingdom UK Energy UK Oil & Gas E&P
78 Challenger Energy Group PLC United Kingdom UK Energy UK Oil & Gas E&P
79 Molecular Energies PLC United Kingdom UK Energy UK Oil & Gas E&P
80 Ashtead Technology Holdings Plc United Kingdom UK Energy UK Oil & Gas Equipment & Services
81 Volga Gas plc United Kingdom UK Energy UK Oil & Gas E&P
82 Bahamas Petroleum Company plc United Kingdom UK Energy UK Oil & Gas E&P
83 Harbour Energy plc United Kingdom UK Energy UK Oil & Gas E&P
84 Premier Oil plc United Kingdom UK Energy UK Oil & Gas E&P
85 Quadrise Plc United Kingdom UK Energy UK Oil & Gas Integrated
86 Orcadian Energy Plc United Kingdom UK Energy UK Oil & Gas E&P
87 Hydrodec Group plc United Kingdom UK Energy UK Oil & Gas Refining & Marketing

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

61. Coro Energy plc

Company Profile: Coro Energy plc
Market Cap (USD): $4.4 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

62. Ascent Resources plc

Company Profile: Ascent Resources plc
Market Cap (USD): $4.4 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

63. Getech Group plc

Company Profile: Getech Group plc
Market Cap (USD): $4.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

64. TomCo Energy plc

Company Profile: TomCo Energy plc
Market Cap (USD): $4.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

65. Deltic Energy plc

Company Profile: Deltic Energy plc
Market Cap (USD): $3.9 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

66. Scirocco Energy plc

Company Profile: Scirocco Energy plc
Market Cap (USD): $3.7 M (Jan. 1, 2024)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

67. Gunsynd plc

Company Profile: Gunsynd plc
Market Cap (USD): $3.1 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

68. Enteq Upstream plc

Company Profile: Enteq Upstream plc
Market Cap (USD): $1.6 M (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

69. ADM Energy plc

Company Profile: ADM Energy plc
Market Cap (USD): $1.3 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

70. SDX Energy plc

Company Profile: SDX Energy plc
Market Cap (USD): $770,143 (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

71. Nostra Terra Oil and Gas Company plc

Company Profile: Nostra Terra Oil and Gas Company plc
Market Cap (USD): $748,207
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

72. Petrofac Limited

Company Profile: Petrofac Limited
Market Cap (USD): $285,296 (July 1, 2025)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

73. Angus Energy plc

Company Profile: Angus Energy plc
Market Cap (USD): $161,074
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

74. Anglo African Oil & Gas plc

Company Profile: Anglo African Oil & Gas plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

75. Sterling Energy plc

Company Profile: Sterling Energy plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

76. Ithaca Energy plc

Company Profile: Ithaca Energy plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

77. Path Investments plc

Company Profile: Path Investments plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

78. Challenger Energy Group PLC

Company Profile: Challenger Energy Group PLC
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

79. Molecular Energies PLC

Company Profile: Molecular Energies PLC
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

80. Ashtead Technology Holdings Plc

Company Profile: Ashtead Technology Holdings Plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Equipment & Services

81. Volga Gas plc

Company Profile: Volga Gas plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

82. Bahamas Petroleum Company plc

Company Profile: Bahamas Petroleum Company plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

83. Harbour Energy plc

Company Profile: Harbour Energy plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

84. Premier Oil plc

Company Profile: Premier Oil plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

85. Quadrise Plc

Company Profile: Quadrise Plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Integrated

86. Orcadian Energy Plc

Company Profile: Orcadian Energy Plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

87. Hydrodec Group plc

Company Profile: Hydrodec Group plc
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Refining & Marketing

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