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 Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
61 TomCo Energy plc $2.0 M United Kingdom UK Energy UK Oil & Gas Drilling
62 Gunsynd plc $1.9 M United Kingdom UK Energy UK Oil & Gas E&P
63 Nostra Terra Oil and Gas Company plc $1.8 M United Kingdom UK Energy UK Oil & Gas E&P
64 John Wood Group plc $1.7 M United Kingdom UK Energy UK Oil & Gas Integrated
65 Savannah Energy plc $1.6 M United Kingdom UK Energy UK Oil & Gas E&P
66 Enteq Upstream plc $1.6 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas Equipment & Services
67 ADM Energy plc $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
68 Westmount Energy Limited $990,177 United Kingdom UK Energy UK Oil & Gas E&P
69 SDX Energy plc $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
70 Petrofac Limited $285,296 United Kingdom UK Energy UK Oil & Gas Equipment & Services
71 Angus Energy plc $164,538 United Kingdom UK Energy UK Oil & Gas E&P
72 Coro Energy plc $57,818 United Kingdom UK Energy UK Oil & Gas E&P
73 UK Oil & Gas plc $23,029 United Kingdom UK Energy UK Oil & Gas E&P
74 Orcadian Energy Plc United Kingdom UK Energy UK Oil & Gas E&P
75 Path Investments plc United Kingdom UK Energy UK Oil & Gas E&P
76 Volga Gas plc United Kingdom UK Energy UK Oil & Gas E&P
77 Hydrodec Group plc United Kingdom UK Energy UK Oil & Gas Refining & Marketing
78 Anglo African Oil & Gas plc United Kingdom UK Energy UK Oil & Gas Drilling
79 Sterling Energy plc United Kingdom UK Energy UK Oil & Gas E&P
80 Harbour Energy plc United Kingdom UK Energy UK Oil & Gas E&P
81 Ashtead Technology Holdings Plc United Kingdom UK Energy UK Oil & Gas Equipment & Services
82 Ithaca Energy plc United Kingdom UK Energy UK Oil & Gas E&P
83 Molecular Energies PLC United Kingdom UK Energy UK Oil & Gas E&P
84 Premier Oil plc United Kingdom UK Energy UK Oil & Gas E&P
85 Bahamas Petroleum Company plc United Kingdom UK Energy UK Oil & Gas E&P
86 Quadrise Plc United Kingdom UK Energy UK Oil & Gas Integrated
87 Challenger Energy Group PLC United Kingdom UK Energy UK Oil & Gas E&P

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

61. TomCo Energy plc

Company Profile: TomCo Energy plc
Market Cap (USD): $2.0 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Drilling

62. Gunsynd plc

Company Profile: Gunsynd plc
Market Cap (USD): $1.9 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

63. Nostra Terra Oil and Gas Company plc

Company Profile: Nostra Terra Oil and Gas Company plc
Market Cap (USD): $1.8 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

64. John Wood Group plc

Company Profile: John Wood Group plc
Market Cap (USD): $1.7 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas Integrated

65. Savannah Energy plc

Company Profile: Savannah Energy plc
Market Cap (USD): $1.6 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

66. 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

67. 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

68. Westmount Energy Limited

Company Profile: Westmount Energy Limited
Market Cap (USD): $990,177
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

69. 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

70. Petrofac Limited

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

71. Angus Energy plc

Company Profile: Angus Energy plc
Market Cap (USD): $164,538
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

72. Coro Energy plc

Company Profile: Coro Energy plc
Market Cap (USD): $57,818
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

73. UK Oil & Gas plc

Company Profile: UK Oil & Gas plc
Market Cap (USD): $23,029
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

74. Orcadian Energy Plc

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

75. Path Investments plc

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

76. Volga Gas plc

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

77. Hydrodec Group plc

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

78. Anglo African Oil & Gas plc

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

79. Sterling Energy plc

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

80. Harbour Energy plc

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

81. Ashtead Technology Holdings Plc

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

82. Ithaca Energy plc

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

83. Molecular Energies PLC

Company Profile: Molecular Energies 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. Bahamas Petroleum Company plc

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

86. Quadrise Plc

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

87. Challenger Energy Group PLC

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

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