Simon Thomson

Chairman at ROCKHOPPER EXPLORATION PLC

Net worth: 37 850 $ as of 31/05/2026

61 year

21 connections

Energy Minerals

Industrial Services

Process Industries

Profile

Simon John Thomson is Non-Executive Chairman at Rockhopper Exploration Plc since 2023.
Mr. Thomson is Non-Executive Director at Graham's Dairies Ltd. Mr. Thomson is Non-Executive Director at Big Technologies Plc starting 2026.
Mr. Thomson is Director at Ardmore Energy Ltd. Former roles include Chief Executive Officer & Executive Director at Capricorn Energy Plc from 2012 to 2023.
Mr. Thomson was Director at MedOil Plc in 2007.
Mr. Thomson was Director at Plectrum Petroleum Plc in 2007.
Mr. Thomson was Director at Capricorn Greenland Exploration 1 Ltd., Capricorn Exploration & Development Co. Ltd., Capricorn Côte d’Ivoire Ltd., Capricorn Energy UK Ltd., Cairn UK Holdings Ltd., Capricorn Oil Ltd., Alba Resources Ltd., Capricorn Senegal Ltd., Grahams the Family Dairy Group Ltd., Grahams The Family Dairy Ltd., Capricorn Ireland Ltd., Edinburgh Arts Festival, Capricorn Resources Management Ltd., Capricorn Mauritania Ltd., Capricorn Senegal (Holding) Ltd., and Capricorn Energy Holdings Ltd. Education includes graduation from the University of Aberdeen.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
Amati AIM VCT Plc Amati AIM VCT Plc Investment ManagersFinance Functions as a private equity fund 0.04%	01/03/2026	52,000 ( 0.04% )	37 850 $	31/05/2026

Simon Thomson active positions

Companies	Position	Start
ROCKHOPPER EXPLORATION PLC	Chairman	01/10/2023
BIG TECHNOLOGIES PLC	Director/Board Member	03/02/2026
Ardmore Energy Ltd. Ardmore Energy Ltd. The private company is located in the UK. The British company employs a disciplined, engineering-driven approach to develop commercially successful and sustainable projects, prioritizing responsible extraction practices to enhance energy security while aligning with carbon reduction and energy transition goals. Ardmore Energy Ltd. is an energy company specializing in the acquisition and strategic development of high-potential onshore oil and gas assets worldwide, including frontier opportunities.	Director/Board Member	-
Graham's Dairies Ltd. Graham's Dairies Ltd. Agricultural Commodities/MillingProcess Industries Produces and supplies milk and other dairy products	Director/Board Member	29/11/2010

All active positions of Simon Thomson

Former positions of Simon Thomson

Companies	Position	End
Alba Resources Ltd. Alba Resources Ltd. Oil & Gas ProductionEnergy Minerals Engages in extraction of crude petroleum	Director/Board Member	29/07/2021
Plectrum Petroleum Plc Plectrum Petroleum Plc Oil & Gas ProductionEnergy Minerals Explores for oil and natural gas offshore	Director/Board Member	14/12/2007
MedOil Plc MedOil Plc Contract DrillingIndustrial Services Provides oil and gas exploration service	Director/Board Member	14/12/2007
Grahams the Family Dairy Group Ltd. Grahams the Family Dairy Group Ltd. Agricultural Commodities/MillingProcess Industries Operates dairy farms	Director/Board Member	-
Cairn UK Holdings Ltd. Cairn UK Holdings Ltd. Oil & Gas ProductionEnergy Minerals Engages in extraction of crude petroleum	Director/Board Member	-

See the detail of Simon Thomson's experience

Training of Simon Thomson

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Simon Thomson's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	24
Capricorn Energy Plc Capricorn Energy Plc Oil & Gas ProductionEnergy Minerals Engages in the exploration and production of oil and gas	Energy Minerals
Capricorn Energy UK Ltd. Capricorn Energy UK Ltd. Contract DrillingIndustrial Services Provides oil exploration and production services	Industrial Services
MedOil Plc MedOil Plc Contract DrillingIndustrial Services Provides oil and gas exploration service	Industrial Services
Rockhopper Exploration Plc Rockhopper Exploration Plc Oil & Gas ProductionEnergy Minerals Engages in exploration of oil and gas business	Energy Minerals
University of Aberdeen University of Aberdeen Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Graham's Dairies Ltd. Graham's Dairies Ltd. Agricultural Commodities/MillingProcess Industries Produces and supplies milk and other dairy products	Process Industries
Plectrum Petroleum Plc Plectrum Petroleum Plc Oil & Gas ProductionEnergy Minerals Explores for oil and natural gas offshore	Energy Minerals
Cairn UK Holdings Ltd. Cairn UK Holdings Ltd. Oil & Gas ProductionEnergy Minerals Engages in extraction of crude petroleum	Energy Minerals
Capricorn Energy Holdings Ltd. Capricorn Energy Holdings Ltd. Contract DrillingIndustrial Services Provides oil and gas exploration services	Industrial Services
Capricorn Oil Ltd. Capricorn Oil Ltd. Oil & Gas ProductionEnergy Minerals Engages in exploration of petroleum and natural gas	Energy Minerals
Alba Resources Ltd. Alba Resources Ltd. Oil & Gas ProductionEnergy Minerals Engages in extraction of crude petroleum	Energy Minerals
Capricorn Greenland Exploration 1 Ltd. Capricorn Greenland Exploration 1 Ltd. Integrated OilEnergy Minerals Provides crude petroleum extraction services	Energy Minerals
Capricorn Senegal Ltd. Capricorn Senegal Ltd. Oil & Gas ProductionEnergy Minerals Engages in extraction of crude petroleum	Energy Minerals
Grahams the Family Dairy Group Ltd. Grahams the Family Dairy Group Ltd. Agricultural Commodities/MillingProcess Industries Operates dairy farms	Process Industries
Grahams The Family Dairy Ltd. Grahams The Family Dairy Ltd. Food: Meat/Fish/DairyConsumer Non-Durables Produces liquid milk and cream	Consumer Non-Durables
Capricorn Ireland Ltd. Capricorn Ireland Ltd. Oil & Gas ProductionEnergy Minerals Engages in the extraction of crude petroleum and natural gas	Energy Minerals
Capricorn Exploration & Development Co. Ltd. Capricorn Exploration & Development Co. Ltd. Integrated OilEnergy Minerals Provides petroleum extraction services	Energy Minerals
Edinburgh Arts Festival
Capricorn Resources Management Ltd. Capricorn Resources Management Ltd. Oil & Gas ProductionEnergy Minerals Engages in producing licence blocks for extraction of crude petroleum	Energy Minerals
Big Technologies Plc Big Technologies Plc Computer CommunicationsElectronic Technology Operates as a holding company whose subsidiaries develops and delivers remote monitoring technologies and services	Electronic Technology
Cairn Côte d'Ivoire Ltd. Cairn Côte d'Ivoire Ltd. Integrated OilEnergy Minerals Provides oil and gas exploration services	Energy Minerals
Capricorn Mauritania Ltd. Capricorn Mauritania Ltd. Oil & Gas ProductionEnergy Minerals Engages in oil and gas exploration	Energy Minerals
Capricorn Senegal (Holding) Ltd. Capricorn Senegal (Holding) Ltd. Financial ConglomeratesFinance Functions as an investment holding company	Finance
Ardmore Energy Ltd. Ardmore Energy Ltd. The private company is located in the UK. The British company employs a disciplined, engineering-driven approach to develop commercially successful and sustainable projects, prioritizing responsible extraction practices to enhance energy security while aligning with carbon reduction and energy transition goals. Ardmore Energy Ltd. is an energy company specializing in the acquisition and strategic development of high-potential onshore oil and gas assets worldwide, including frontier opportunities.