- PETROS STUDIO LIMITED- 10253812 - Incorporated on 28 June 2016 
- PETROSERVICE LLPActive - Proposal to Strike off- OC386787 - Incorporated on 24 July 2013 
- PETROSPACE LLP- OC435039 - Incorporated on 12 January 2021 
- PETROSMART LTD- 16008519 - Incorporated on 9 October 2024 
- PETROSTATE LTD- 16350326 - Incorporated on 28 March 2025 
- PETROSHENKO LTD- 16456949 - Incorporated on 19 May 2025 
- EP PETROSERVICE LTDDisolved- 09324169 - Dissolved on 12 December 2023 
- PETROS YIANNOULLOU LTD- 14159670 - Incorporated on 8 June 2022 
- PETROS NORWICH LIMITED- 05617159 - Incorporated on 9 November 2005 
- PETROS (TRURO) LIMITED- 03853454 - Incorporated on 5 October 1999 
- PETROS CANTERBURY LIMITED- 07382969 - Incorporated on 21 September 2010 
- PETROS SOLUTIONS LTDActive - Proposal to Strike off- 08311339 - Incorporated on 28 November 2012 
- PETROS CONSULTING LIMITEDActive - Proposal to Strike off- 08635420 - Incorporated on 2 August 2013 
- PETROS MANAGEMENT LLP- OC342961 - Incorporated on 29 January 2009 
- PETROS CONCRETE LTD- 11893954 - Incorporated on 20 March 2019 
- PETROS PLUMBING LTD- 15970400 - Incorporated on 21 September 2024 
- PETROSHOPS LTD.- SC219969 - Incorporated on 7 June 2001 
- PETROSCONSULTANCY LTDDissolved- 06162480 - Dissolved on 21 July 2015 
- PICT VENTURES LIMITED- SC716535 - Incorporated on 1 December 2021 
- PETROS PROPERTIES LTD- 12687321 - Incorporated on 20 June 2020