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- APPLE GARTH LTDDisolved- 10953941 - Dissolved on 9 August 2022 
- GARTH CELYN LTD- 13934410 - Incorporated on 23 February 2022 
- SOUTH GARTH LTD- 15829871 - Incorporated on 10 July 2024 
- GLYN GARTH CLUB- 07820127 - Incorporated on 24 October 2011 
- GARTHORPE LTDDisolved- 13747819 - Dissolved on 16 April 2024 
- THE PETERSEN GROUP LTD- 08757712 - Incorporated on 1 November 2013 
- AUTOCENTER PETERSEN LIMITEDDisolved- 05008227 - Dissolved on 9 November 2021 
- PETERSEN BOOTH LIMITEDActive - Proposal to Strike off- 07096328 - Incorporated on 5 December 2009 
- PETERSEN ASSOCIATES LIMITED- 07136991 - Incorporated on 26 January 2010 
- ALISON PETERSEN LIMITEDLiquidation- 07190227 - Incorporated on 16 March 2010 
- HANNS PETERSEN LIMITEDDissolved- 07224276 - Dissolved on 1 May 2018 
- JOHN PETERSEN LIMITEDDissolved- 07596144 - Dissolved on 27 August 2013 
- PETERSEN MARCOMS LIMITED- 07799626 - Incorporated on 6 October 2011 
- PETERSEN WILLIAMS LLP- OC353867 - Incorporated on 6 April 2010 
- PHILIP PETERSEN LIMITED- NI003471 - Incorporated on 28 January 1955 
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- PETERSEN ROBERTS LTDDissolved- 10653245 - Dissolved on 4 June 2019 
- PETERSEN PROPERTIES LTD- 10783711 - Incorporated on 22 May 2017