- TWEDDELL & SLATER LIMITED- 03940744 - Incorporated on 6 March 2000 
- CHARNOCK & SLATER LIMITEDLiquidation- 01607871 - Incorporated on 14 January 1982 
- SLATER & SPIERS LIMITED- 11950767 - Incorporated on 17 April 2019 
- SLATER & ROMP LIMITEDDisolved- 11261386 - Dissolved on 11 April 2023 
- HARMER SLATER LIMITED- 07167165 - Incorporated on 24 February 2010 
- WALKER SLATER LIMITED- 02449345 - Incorporated on 5 December 1989 
- SLATER TANGENT LIMITED- 02860212 - Incorporated on 7 October 1993 
- MORGAN & SLATER LIMITED- 03466392 - Incorporated on 14 November 1997 
- SLATER MANAGEMENT LIMITED- 05340244 - Incorporated on 24 January 2005 
- SLATER BUILDERS LIMITED- 06931404 - Incorporated on 11 June 2009 
- SLATER FINANCIAL LTD- 07111538 - Incorporated on 23 December 2009 
- COLLYWESTON SLATER LTDDissolved- 07478889 - Dissolved on 12 August 2014 
- SLATER AEROSYSTEMS LIMITEDActive - Proposal to Strike off- 07637595 - Incorporated on 17 May 2011 
- SLATER CONSULTING LIMITEDDisolved- 06982315 - Dissolved on 9 January 2024 
- SLATER AUDIOLOGY LIMITED- 07919870 - Incorporated on 23 January 2012 
- NICHOLSON SLATER LIMITEDActive - Proposal to Strike off- 04676959 - Incorporated on 25 February 2003 
- MARCH SLATER LIMITEDDissolved- 04678182 - Dissolved on 11 May 2010 
- BRIAN SLATER LIMITEDDissolved- 04916431 - Dissolved on 24 September 2019 
- COBB SLATER LIMITEDActive - Proposal to Strike off- 03874319 - Incorporated on 10 November 1999 
- SLATER INVESTMENTS LIMITED- 02863882 - Incorporated on 19 October 1993