Prospex Energy PLC

Active03896382 Public limited company

Incorporated: 17 December 1999 (26 years)
Previously known as: Prospex Oil and Gas PLC (until 2 July 2020)
Premier Gold Resources PLC (until 16 April 2015)
Premier Management Holdings PLC (until 30 March 2012)
Earlier: Marketretain Public Limited Company
Industry: Activities of other holding companies n.e.c. (64209)
Directors: Simon Gerald Ashby-Rudd
Thomas Hamilton Reynolds
Alasdair Ian Buchanan
all 4 directors
Accounts type: Full
Region: Greater London
Address: C/o Arch Law Huckletree Bishopsgate
8 Bishopsgate
London
EC2N 4BQ

Website & contact details

Group website: prospexenergy.co.uk
The site of this company’s group or brand.

Filing status

Accounts due: 30 June 2027
Last accounts: 31 December 2025
Conf. stmt due: 29 December 2026
Last conf. stmt: 15 December 2025

Charges

Total: 4
Outstanding: 0
Part satisfied: 0
Satisfied: 4

Officers 5 active

Officer details are public data from the Companies House register.

Ashby-Rudd, Simon Gerald

Director · Appointed 7 May 2026

Also at Europa Oil & Gas (Holdings) PLC · more companies

British

Born June 1967 (59)

Reynolds, Thomas Hamilton

Director · Appointed 1 February 2026

Also at Pxog Marshall Limited, Pxog Muirhill Limited, Zephyr Energy PLC · more companies

British

Born March 1970 (56)

Harber, Ben

Secretary · Appointed 1 November 2021

Buchanan, Alasdair Ian

Director · Appointed 27 August 2021

British

Born November 1960

Smith, William Hartman

Director · Appointed 14 April 2015

Canadian

Born September 1952 (74)

Officer history (21 former)

23 June 2026

Resigned Hay, Andrew Nicholas John as Director

7 May 2026

Appointed Ashby-Rudd, Simon Gerald as Director

1 February 2026

Resigned Routh, Mark Christopher as Director

1 February 2026

Appointed Reynolds, Thomas Hamilton as Director

19 April 2023

Appointed Hay, Andrew Nicholas John as Director

7 February 2023

Resigned Mays, Richard Paul, Dr as Director

1 November 2021

Appointed Harber, Ben as Secretary

1 November 2021

Resigned Desler, Gerry as Secretary

27 August 2021

Appointed Buchanan, Alasdair Ian as Director

27 July 2021

Resigned Smith, James Nicholas as Director

27 July 2021

Appointed Routh, Mark Christopher as Director

27 July 2021

Resigned Dawson, Edward Roland as Director

23 December 2016

Appointed Smith, James Nicholas as Director

28 April 2016

Resigned Burnell, Gavin John as Director

14 April 2015

Resigned Nolan, Richard as Director

14 April 2015

Appointed Burnell, Gavin John as Director

14 April 2015

Appointed Dawson, Edward Roland as Director

14 April 2015

Resigned Desler, Gerry as Director

14 April 2015

Resigned Earls, James Garth Taylor, Professor as Director

14 April 2015

Appointed Mays, Richard Paul, Dr as Director

14 April 2015

Appointed Smith, William Hartman as Director

14 April 2015

Resigned Schaffalitzky De Muckadell, Christian as Director

14 October 2014

Resigned Stewart, Robert Alexander as Director

19 June 2014

Resigned Tabrizi, Reza as Director

1 November 2012

Appointed Earls, James Garth Taylor, Professor as Director

1 June 2012

Appointed Stewart, Robert Alexander as Director

6 September 2011

Resigned Kitwell Consultants Limited as Corporate Secretary

1 September 2011

Appointed Nolan, Richard as Director

1 June 2011

Appointed Kitwell Consultants Limited as Corporate Secretary

18 November 2010

Resigned Gold, Barry as Director

12 November 2010

Appointed Tabrizi, Reza as Director

12 November 2010

Appointed Schaffalitzky De Muckadell, Christian as Director

25 October 2005

Resigned Jennings, William John as Director

22 January 2003

Resigned Lucas, Stuart John as Director

25 October 2000

Appointed Desler, Gerry as Secretary

25 October 2000

Resigned Gold, Barry as Secretary

12 January 2000

Appointed Gold, Barry as Secretary

12 January 2000

Appointed Gold, Barry as Director

12 January 2000

Appointed Jennings, William John as Director

12 January 2000

Appointed Desler, Gerry as Director

12 January 2000

Appointed Lucas, Stuart John as Director

12 January 2000

Resigned Swift Incorporations Limited as Corporate Nominee Secretary

12 January 2000

Resigned Instant Companies Limited as Corporate Nominee Director

12 January 2000

Resigned Swift Incorporations Limited as Corporate Nominee Director

17 December 1999

Appointed Swift Incorporations Limited as Corporate Nominee Secretary

17 December 1999

Appointed Instant Companies Limited as Corporate Nominee Director

17 December 1999

Appointed Swift Incorporations Limited as Corporate Nominee Director

Ownership 0 active

People and entities with significant control, from the Companies House PSC register

The company has declared that it has no person with significant control.

Holdings 2

Companies where Prospex Energy PLC is registered as a person with significant control

Pxog Marshall Limited

Owns 75–100% of shares

Active

Pxog Muirhill Limited

Owns 75–100% of shares

Active

Former controllers (1)

1 November 2021

Ceased Barclays Nominees Ltd — Owns 25–50% of shares

Filings 272

Date	Description	Made Up To
10 August 2026	Termination of appointment of a director
4 July 2026	Resolutions
23 June 2026	Full accounts	31 December 2025
12 May 2026	Appointment of a director
20 March 2026	Statement of capital following an allotment of shares