- HARMAN MARKETING LTDDissolved- 07451128 - Dissolved on 15 January 2013 
- HARMAN HAULAGE LIMITED- 00986300 - Incorporated on 6 August 1970 
- HARMAN PUBLISHING LTDDissolved- 05902745 - Dissolved on 11 December 2012 
- MISS HARMAN LIMITEDActive - Proposal to Strike off- 08873132 - Incorporated on 3 February 2014 
- HARMAN PACKAGING LIMITED- 08885069 - Incorporated on 10 February 2014 
- HARMAN TRANSPORT LIMITED- 08675878 - Incorporated on 4 September 2013 
- HARMAN KLER LIMITEDActive - Proposal to Strike off- 07497060 - Incorporated on 18 January 2011 
- HARMAN MARTIN LIMITED- 07784094 - Incorporated on 22 September 2011 
- HARMAN HEALTHCARE LTDDisolved- 12738020 - Dissolved on 30 November 2021 
- KIERAN HARMAN LIMITEDActive - Proposal to Strike off- 10821697 - Incorporated on 16 June 2017 
- HARMAN WHOLESALE LTDDisolved- 10894217 - Dissolved on 18 April 2023 
- HARMAN CONSULTING LIMITED- 10192710 - Incorporated on 21 May 2016 
- HARMAN BUILDERS LTD- 11951434 - Incorporated on 17 April 2019 
- HARMAN RESTORATIONS LTD.- 16019957 - Incorporated on 15 October 2024 
- HARMAN INDUSTRIAL LLPDissolved- OC317717 - Dissolved on 30 April 2008 
- HARMAN INCORPORATED LIMITED- 02068415 - Incorporated on 29 October 1986 
- HARMAN HEATING LIMITEDDissolved- 06558432 - Dissolved on 5 October 2014 
- PHILIP HARMAN LIMITEDActive - Proposal to Strike off- 06666528 - Incorporated on 6 August 2008 
- HARMAN HOLISTIX LIMITED- 07038205 - Incorporated on 12 October 2009 
- MISS HARMAN LIMITEDDissolved- 07212445 - Dissolved on 18 June 2013