- O2 LEISURE LIMITEDDissolved- 07187591 - Dissolved on 6 August 2013 
- O2 CONSULTANTS LIMITEDDissolved- 05530608 - Dissolved on 16 March 2010 
- O2 (UK) LIMITED- 02012647 - Incorporated on 22 April 1986 
- O2 CEDAR LIMITED- 04678681 - Incorporated on 26 February 2003 
- O2 PINE LIMITED- 06281240 - Incorporated on 15 June 2007 
- O2 WORX LIMITED- SC695464 - Incorporated on 12 April 2021 
- O2 CATERING LIMITED- 10355034 - Incorporated on 1 September 2016 
- DRINK O2 LIMITED- NI665269 - Incorporated on 22 October 2019 
- O2 TRADING LIMITEDDisolved- 13253767 - Dissolved on 16 August 2022 
- O2 SCAFFOLDING LIMITED- 15856810 - Incorporated on 24 July 2024 
- PURE DATA CENTRES GROUP LIMITED- A W HOUSE 6/8 STUART STREET, LUTON, ENGLAND, LU1 2SJ 
- PURE ELEGANCE WEDDINGS & EVENTS LIMITED- MARRONE 13 LEYLAND DRIVE, CHORLEY, ENGLAND, PR7 3BQ 
- PURE SITES LTD- 269 WALMERSLEY ROAD, BURY, LANCASHIRE, UNITED KINGDOM, BL9 6NX 
- PURE CAPITAL S.A.- 2 Rue D'Arlon, Windhof, Luxembourg, L-8399 
- PURE INVESTMENT OU- HARJU MAAKOND KUUSALU VALD, PUDISOO KULA,, MANNIMAE, ESTONIA, 74626 
- O2 PRODUCTIONS LIMITEDActive - Proposal to Strike off- 03624876 - Incorporated on 1 September 1998 
- BAR O2 LIMITED- 04192727 - Incorporated on 3 April 2001 
- O2 GLOBAL LIMITEDDissolved- 05561062 - Dissolved on 15 November 2011 
- O2 PLATFORM LIMITED- 07497183 - Incorporated on 18 January 2011 
- O2 SHINE LIMITEDDisolved- 08033616 - Dissolved on 17 June 2025