- PROF TEC. LIMITED- NI612107 - Incorporated on 5 April 2012 
- PROF SELIG LTD- 12245748 - Incorporated on 7 October 2019 
- DIRBA PROF LTDDisolved- 12618215 - Dissolved on 2 November 2021 
- MEDIC PROF LTD- 10190089 - Incorporated on 19 May 2016 
- ST PROF LTDActive - Proposal to Strike off- 12561223 - Incorporated on 17 April 2020 
- PROF LION LIMITED- 13726255 - Incorporated on 5 November 2021 
- KLR PROF LTD- 16317228 - Incorporated on 14 March 2025 
- TIN GLAZE INTERIORS LTDDissolved- 07566937 - Dissolved on 30 April 2013 
- PROF. PETER CONLONDisolved- NI605285 - Dissolved on 12 June 2025 
- PROF. HUGH MULCAHY- NI605314 - Incorporated on 30 November 2010 
- PROF. RICHARD COSTELLO- NI605398 - Incorporated on 6 December 2010 
- PROF. DONAL HOLLYWOODActive - Proposal to Strike off- NI605408 
- PROF. MICHAEL KERINDisolved- NI605710 - Dissolved on 22 October 2024 
- IT PROF LTDActive - Proposal to Strike off- 07058166 - Incorporated on 27 October 2009 
- PROF CONSULTANTS LP- SL021960 - Incorporated on 20 August 2015 
- PROF HRC LTD- 12015711 - Incorporated on 24 May 2019 
- PROF EDILE LTDDisolved- 14138776 - Dissolved on 8 August 2023 
- DIET PROF LTD- 14320343 - Incorporated on 26 August 2022 
- DRV-PROF LTD- 14335939 - Incorporated on 5 September 2022 
- PROF PA LTD- 15067047 - Incorporated on 13 August 2023