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 Jul. 01, 2025

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Rank Company Market Cap (USD) Country Sector Industry
31 The Parkmead Group plc $22.5 M United Kingdom UK Energy UK Oil & Gas E&P
32 Indus Gas Limited $19.3 M United Kingdom UK Energy UK Oil & Gas E&P
33 Sound Energy plc $19.3 M United Kingdom UK Energy UK Oil & Gas E&P
34 Longboat Energy plc $14.1 M United Kingdom UK Energy UK Oil & Gas E&P
35 Union Jack Oil plc $13.9 M United Kingdom UK Energy UK Oil & Gas E&P
36 Tower Resources plc $12.9 M United Kingdom UK Energy UK Oil & Gas E&P
37 Block Energy plc $10.1 M United Kingdom UK Energy UK Oil & Gas E&P
38 Deltic Energy plc $8.7 M United Kingdom UK Energy UK Oil & Gas E&P
39 Reabold Resources plc $8.2 M United Kingdom UK Energy UK Oil & Gas E&P
40 Europa Oil & Gas (Holdings) plc $6.9 M United Kingdom UK Energy UK Oil & Gas E&P
41 United Oil & Gas plc $5.9 M United Kingdom UK Energy UK Oil & Gas E&P
42 Serinus Energy plc $4.8 M

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
43 Scirocco Energy plc $3.7 M

(Jan. 1, 2024)

 United Kingdom UK Energy UK Oil & Gas E&P
44 Ascent Resources plc $3.7 M United Kingdom UK Energy UK Oil & Gas E&P
45 Gunsynd plc $1.9 M United Kingdom UK Energy UK Oil & Gas E&P
46 Nostra Terra Oil and Gas Company plc $1.8 M United Kingdom UK Energy UK Oil & Gas E&P
47 Savannah Energy plc $1.6 M United Kingdom UK Energy UK Oil & Gas E&P
48 ADM Energy plc $1.3 M United Kingdom UK Energy UK Oil & Gas E&P
49 Westmount Energy Limited $990,177 United Kingdom UK Energy UK Oil & Gas E&P
50 SDX Energy plc $770,143

(Jan. 1, 2025)

 United Kingdom UK Energy UK Oil & Gas E&P
51 Angus Energy plc $164,538 United Kingdom UK Energy UK Oil & Gas E&P
52 Coro Energy plc $57,818 United Kingdom UK Energy UK Oil & Gas E&P
53 UK Oil & Gas plc $23,029 United Kingdom UK Energy UK Oil & Gas E&P
54 Orcadian Energy Plc United Kingdom UK Energy UK Oil & Gas E&P
55 Sterling Energy plc United Kingdom UK Energy UK Oil & Gas E&P
56 Bahamas Petroleum Company plc United Kingdom UK Energy UK Oil & Gas E&P
57 Premier Oil plc United Kingdom UK Energy UK Oil & Gas E&P
58 Molecular Energies PLC United Kingdom UK Energy UK Oil & Gas E&P
59 Ithaca Energy plc United Kingdom UK Energy UK Oil & Gas E&P
60 Harbour Energy plc United Kingdom UK Energy UK Oil & Gas E&P

Top Oil & Gas E&P Companies from the United Kingdom as of Jul. 01, 2025

31. The Parkmead Group plc

Company Profile: The Parkmead Group plc
Market Cap (USD): $22.5 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

32. Indus Gas Limited

Company Profile: Indus Gas Limited
Market Cap (USD): $19.3 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

33. Sound Energy plc

Company Profile: Sound Energy plc
Market Cap (USD): $19.3 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

34. Longboat Energy plc

Company Profile: Longboat Energy plc
Market Cap (USD): $14.1 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

35. Union Jack Oil plc

Company Profile: Union Jack Oil plc
Market Cap (USD): $13.9 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

36. Tower Resources plc

Company Profile: Tower Resources plc
Market Cap (USD): $12.9 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

37. Block Energy plc

Company Profile: Block Energy plc
Market Cap (USD): $10.1 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

38. Deltic Energy plc

Company Profile: Deltic Energy plc
Market Cap (USD): $8.7 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): $8.2 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

40. Europa Oil & Gas (Holdings) plc

Company Profile: Europa Oil & Gas (Holdings) plc
Market Cap (USD): $6.9 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): $5.9 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

42. 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

43. 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

44. Ascent Resources plc

Company Profile: Ascent Resources plc
Market Cap (USD): $3.7 M
Country: United Kingdom
Sector: UK Energy
Industry: UK Oil & Gas E&P

45. Gunsynd plc

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

46. 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

47. 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

48. 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

49. 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

50. 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

51. 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

52. 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

53. 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

54. Orcadian Energy Plc

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

55. Sterling Energy plc

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

56. Bahamas Petroleum Company plc

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

57. Premier Oil plc

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

58. Molecular Energies PLC

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

59. Ithaca Energy plc

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

60. Harbour Energy plc

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

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