| .png) | | 18185/Finarea SA (1) | |
| .png) | | 1899/Finarea SA (1) | |
|  | | 4tel Communications (1) | |
|  | | ACN European Services Ltd (1) | |
| .png) | | Adept Telecom (1) | |
| .png) | | Alpha International Overseas Telecommunications Services Ltd (1) | |
|  | | Andrews & Arnold Ltd (1) | |
|  | | AOL Europe Services Sàrl (1) | |
|  | | Axis Telecom Ltd (1) | |
|  | | Band Telecom Ltd (1) | |
| .png) | | Barablu (1) | |
|  | | Betamax GmbH & Co KG (1) | |
| .png) | | Breathe Talk (1) | |
|  | | British Telecommunications PLC (1) | |
| | | Bulldog Communications Ltd (1) | |
| .png) | | Call Union (1) | |
|  | | Call118866/Finarea SA (1) | |
|  | | Callax Telecom Ltd (1) | |
| .png) | | Callserve Communications Ltd (1) | |
| .png) | | Care Telecom Ltd (1) | |
|  | | Carphone Warehouse Business Solutions Ltd (1) | |
|  | | Carphone Warehouse PLC (1) | |
|  | | Centrica PLC (1) | |
|  | | CheapestChat (1) | |
|  | | Coms.Com Ltd (1) | |
|  | | Consumer First Ltd (1) | |
|  | | Cyta (UK) Ltd (1) | |
|  | | Demon (1) | |
|  | | Direct Save Telecom (1) | |
|  | | DRD Communications Ltd (1) | |
|  | | Easy-Dial (1) | |
|  | | Eclipse Networking Ltd (1) | |
|  | | Equitalk.co.uk Ltd (1) | |
|  | | e-SHOP Telecom (1) | |
|  | | Euphony Communications Ltd (1) | |
|  | | Finarea SA (1) | |
|  | | First National Telecomms Services Ltd (1) | |
|  | | FreedomCall Ltd (1) | |
|  | | Freetalk Communications Ltd (1) | |
|  | | Glow Telecom (1) | |
|  | | Gradwell Dot Com Ltd (1) | |
|  | | Highland Network Ltd (1) | |
| .png) | | ICUK Computing Services Ltd (1) | |
| .png) | | Inet Telecoms Ltd (1) | |
| .png) | | IV Response Ltd (1) | |
| .png) | | Jersey Telecoms (1) | |
| .png) | | Joy Telecom (1) | |
| .png) | | Kent Telephones Ltd (1) | |
| .png) | | Kingston Communications (Hull) PLC (1) | |
| .png) | | Kiss Telecom Ltd (1) | |
| .png) | | Lansdowne Telecom (1) | |
| .png) | | Liquid Telecommunications Ltd (1) | |
| .png) | | Lo-Call Telecom Ltd (1) | |
| .png) | | Localphone Ltd (1) | |
| .png) | | Lycatel Ltd (1) | |
| .png) | | Magrathea Telecommunications Ltd (Telesave) (1) | |
| .png) | | Maxtalk Ltd (1) | |
| .png) | | MCI WorldCom Ltd (1) | |
| .png) | | Midland Telecom (1) | |
| .png) | | News Optimus Ltd (1) | |
| .png) | | Nildram (1) | |
| .png) | | Nomi (White Nights Telecomunicações e Serviços Lda) (1) | |
| .png) | | North American Gateway Ltd (1) | |
| .png) | | OneBill Telecom Ltd (1) | |
| .png) | | Opal Telecommunications Ltd (1) | |
| .png) | | p2p Communications Ltd (1) | |
| .png) | | Phonecard Services Ltd (1) | |
|  | | Pipex Communications (1) | |
|  | | Pipex Homecall Ltd (1) | |
|  | | PlusNet Plc (1) | |
|  | | Post Office Ltd (1) | |
|  | | Primus Telecommunications Ltd (1) | |
|  | | Qualicom Aspire Ltd (1) | |
|  | | QX Telecom Ltd (1) | |
|  | | RateBusters Ltd (1) | |
|  | | Resource Utilities Ltd (1) | |
|  | | Saga Services Ltd (1) | |
|  | | Sainsbury's Telecom (1) | |
|  | | Schooltel Ltd (1) | |
|  | | Scottish and Southern Energy PLC (1) | |
|  | | Simply-Fone (1) | |
|  | | Sipgate (Indigo Networks GmbH) (1) | |
|  | | Skype Communications SA (1) | |
|  | | Smallworld Media Communications Ltd (1) | |
|  | | SolwiseTelephony Ltd (1) | |
|  | | Splash Telecom (1) | |
|  | | Startup Ventures Ltd (1) | |
|  | | Story Telecom (1) | |
|  | | SuperLine Telecommunications Ltd (1) | |
|  | | Swiftcall Ltd (1) | |
|  | | Swiftnet Ltd (1) | |
|  | | Talk Online Ltd (1) | |
|  | | TalkTalk Business (1) | |
|  | | Telappliant (1) | |
|  | | Telecom Plus PLC (1) | |
|  | | Telediscount/Finarea SA (1) | |
|  | | Telestunt (1) | |
|  | | Telstra Europe Ltd (1) | |
|  | | Tesco Talk (1) | |
|  | | The Phone Co-Op Ltd (1) | |
|  | | Timepiece Lda (1) | |
|  | | Tiscali UK (1) | |
|  | | Toucan (1) | |