United Kingdom

Top 63 largest UK Companies in the Oil & Gas E&P industry by Market Cap

This is the list of the largest public listed companies in the Oil & Gas E&P industry from the United Kingdom by market capitalization with links to their reference stock.

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Top Oil & Gas E&P Companies from the United Kingdom as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
31 Petro Matad Limited $27.2 M United Kingdom UK Energy UK Oil & Gas E&P
32 Trinity Exploration & Production plc $24.1 M

(July 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
33 The Parkmead Group plc $21.3 M United Kingdom UK Energy UK Oil & Gas E&P
34 Prospex Energy plc $15.3 M United Kingdom UK Energy UK Oil & Gas E&P
35 Tower Resources plc $12.6 M United Kingdom UK Energy UK Oil & Gas E&P
36 Block Energy plc $10.2 M United Kingdom UK Energy UK Oil & Gas E&P
37 Westmount Energy Limited $8.7 M United Kingdom UK Energy UK Oil & Gas E&P
38 Indus Gas Limited $7.2 M United Kingdom UK Energy UK Oil & Gas E&P
39 Reabold Resources plc $7.2 M United Kingdom UK Energy UK Oil & Gas E&P
40 Baron Oil plc $6.8 M United Kingdom UK Energy UK Oil & Gas E&P
41 United Oil & Gas plc $6.6 M United Kingdom UK Energy UK Oil & Gas E&P
42 UK Oil & Gas plc $6.5 M United Kingdom UK Energy UK Oil & Gas E&P
43 Serinus Energy plc $4.8 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
44 Union Jack Oil plc $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
45 Coro Energy plc $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
46 Ascent Resources plc $4.4 M United Kingdom UK Energy UK Oil & Gas E&P
47 Deltic Energy plc $3.9 M United Kingdom UK Energy UK Oil & Gas E&P
48 Scirocco Energy plc $3.7 M

(Jan. 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
49 Gunsynd plc $3.1 M United Kingdom UK Energy UK Oil & Gas E&P
50 ADM Energy plc $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
51 SDX Energy plc $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
52 Nostra Terra Oil and Gas Company plc $748,207 United Kingdom UK Energy UK Oil & Gas E&P
53 Angus Energy plc $161,074 United Kingdom UK Energy UK Oil & Gas E&P
54 Harbour Energy plc United Kingdom UK Energy UK Oil & Gas E&P
55 Path Investments plc United Kingdom UK Energy UK Oil & Gas E&P
56 Challenger Energy Group PLC United Kingdom UK Energy UK Oil & Gas E&P
57 Bahamas Petroleum Company plc United Kingdom UK Energy UK Oil & Gas E&P
58 Volga Gas plc United Kingdom UK Energy UK Oil & Gas E&P
59 Orcadian Energy Plc United Kingdom UK Energy UK Oil & Gas E&P
60 Sterling Energy plc United Kingdom UK Energy UK Oil & Gas E&P

Top Oil & Gas E&P Companies from the United Kingdom as of Jan. 01, 2026

31. Petro Matad Limited

Company Profile: Petro Matad Limited
Market Cap (USD): $27.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

32. Trinity Exploration & Production plc

Company Profile: Trinity Exploration & Production plc
Market Cap (USD): $24.1 M (July 1, 2024)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

33. The Parkmead Group plc

Company Profile: The Parkmead Group plc
Market Cap (USD): $21.3 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

34. Prospex Energy plc

Company Profile: Prospex Energy plc
Market Cap (USD): $15.3 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

35. Tower Resources plc

Company Profile: Tower Resources plc
Market Cap (USD): $12.6 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

36. Block Energy plc

Company Profile: Block Energy plc
Market Cap (USD): $10.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

37. Westmount Energy Limited

Company Profile: Westmount Energy Limited
Market Cap (USD): $8.7 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

38. Indus Gas Limited

Company Profile: Indus Gas Limited
Market Cap (USD): $7.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

39. Reabold Resources plc

Company Profile: Reabold Resources plc
Market Cap (USD): $7.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

40. Baron Oil plc

Company Profile: Baron Oil plc
Market Cap (USD): $6.8 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

41. United Oil & Gas plc

Company Profile: United Oil & Gas plc
Market Cap (USD): $6.6 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

42. UK Oil & Gas plc

Company Profile: UK Oil & Gas plc
Market Cap (USD): $6.5 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

43. Serinus Energy plc

Company Profile: Serinus Energy plc
Market Cap (USD): $4.8 M (Jan. 1, 2025)
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

44. Union Jack Oil plc

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

45. 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

46. 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

47. 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

48. 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

49. Gunsynd plc

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

50. 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

51. 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

52. 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

53. 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

54. Harbour Energy plc

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

55. Path Investments plc

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

56. Challenger Energy Group PLC

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

57. Bahamas Petroleum Company plc

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

58. Volga Gas plc

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

59. Orcadian Energy Plc

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

60. Sterling Energy plc

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

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