- ATASO LIMITEDActive - Proposal to Strike off- 10825634 - Incorporated on 19 June 2017 
- ATAUR LIMITED- 15394639 - Incorporated on 8 January 2024 
- ATAYA LIMITEDActive - Proposal to Strike off- 08065753 - Incorporated on 11 May 2012 
- ATALO LIMITEDDissolved- 06605615 - Dissolved on 21 June 2011 
- ATAHM LIMITEDDissolved- 07762958 - Dissolved on 25 February 2014 
- ATAXO LIMITEDDissolved- 07053381 - Dissolved on 24 December 2013 
- ATALI LIMITEDActive - Proposal to Strike off- 07974668 - Incorporated on 5 March 2012 
- ATANE LIMITED- NI034947 - Incorporated on 8 October 1998 
- ATAEF LIMITED- 16145355 - Incorporated on 19 December 2024 
- DOWNTON HALL PROPERTIES LIMITEDDissolved- 04629812 - Dissolved on 3 May 2011 
- ATASS LIMITED- 04807405 - Incorporated on 23 June 2003 
- ATAKO LIMITEDDissolved- 05491145 - Dissolved on 9 August 2011 
- ATA & CO UK LIMITEDDisolved- 12686775 - Dissolved on 1 October 2024 
- ATAYA LIMITED- 16460218 - Incorporated on 19 May 2025 
- GEI ENGINEERING PRODUCTS LIMITEDDissolved- 00152423 - Dissolved on 25 August 2009 
- DOWNHOLE PRODUCTS ENGINEERING LIMITEDDissolved- SC340970 - Dissolved on 7 May 2010 
- CHASE PRODUCTS (ENGINEERING) LIMITED- 00379888 - Incorporated on 7 April 1943 
- BESTOBELL ENGINEERING PRODUCTS LIMITED- 00527528 - Incorporated on 1 January 1954 
- BELLS ENGINEERING PRODUCTS LIMITED- 03435037 - Incorporated on 16 September 1997 
- ALPHATECH ENGINEERING PRODUCTS LIMITED- 02934957 - Incorporated on 2 June 1994