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- WAKE UP MADE UP LTDActive - Proposal to Strike off- 10917080 - Incorporated on 15 August 2017 
- PIRI REIS LLPDisolved- OC448921 - Dissolved on 4 February 2025 
- ISA REISS LTDDisolved- 15881801 - Dissolved on 25 February 2025 
- ASCH REIS LTDDisolved- 14409766 - Dissolved on 12 March 2024 
- TEAM-QDOS LIMITED- 07946581 - Incorporated on 13 February 2012 
- RK DOS LLPActive - Proposal to Strike off- OC355694 - Incorporated on 16 June 2010 
- DOSS 101934 LTDActive - Proposal to Strike off- 10374272 - Incorporated on 14 September 2016 
- DOSE 92 LTD- 14438590 - Incorporated on 24 October 2022 
- DOS LIMITEDDisolved- SC233372 - Dissolved on 9 May 2023 
- STIFTUNG DOSDisolved- 11132496 - Dissolved on 9 August 2022 
- REISER (UK) LTD.- FC017503 - Incorporated on 23 August 1993 
- HK REISEN LTDActive - Proposal to Strike off- 05396033 - Incorporated on 17 March 2005 
- REISER (UK) LTD.registered- OE026722 - Incorporated on 16 February 2023 
- PROPERTY INDEX EXCHANGE LIMITED- 06943563 - Incorporated on 24 June 2009 
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- DOSS LTDDissolved- 07486601 - Dissolved on 21 August 2012 
- DOSU LTD- 09550577 - Incorporated on 20 April 2015 
- AK DOS LTDActive - Proposal to Strike off- 10605140 - Incorporated on 7 February 2017