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- DAVID ROBERT CONSULTING LIMITEDLiquidation- 09300666 - Incorporated on 7 November 2014 
- ROBERT DAVID JACKSON LIMITEDActive - Proposal to Strike off- 11556524 - Incorporated on 6 September 2018 
- ROBERT DAVID KITCHENS LTDDissolved- 10334984 - Dissolved on 20 November 2018 
- ROBERT DAVID BURBIDGE LIMITED- 09820544 - Incorporated on 12 October 2015 
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- DAVID JOHNSTON TECHNICAL SERVICES LIMITEDDisolved- NI659138 - Dissolved on 20 July 2021 
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- DAVID JOHNSTON RAIL SERVICES LTD- 13504092 - Incorporated on 9 July 2021 
- DAVID JOHNSTON EDUCATION SERVICES LIMITEDActive - Proposal to Strike off- 07438758 - Incorporated on 12 November 2010 
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