More than 250,000 users across more than 5,000 European corporations rely upon SmartNumbers technology for a whole range of mission-critical telephony applications. Ranging from the largest organizations such as the Ministry of Defence to the smaller start-ups housed in Regus offices, SmartNumbers clients are driving down the costs of business communication.

• 3M Ltd
• Abbotts
• Accenture
• Allied Irish
• Alstom Power
• Applied BioSystems
• Autoglass
• BEA
• Baby Bird (UK) Ltd
• Bank of Ireland
• Barclays Bank
• BASF
• BASS Hotels
• Belhaven Graham Ltd
• Benelux
• Biometrics Systems Solutions
• Bloomberg
• Brita Water Filter Systems
• BT Group
• Business Link
• Camden and Islington Community Health Services
• Capital Partners
• Capita Business Services
• Centreparcs
• Compass Group Ltd
• Co-Op Future Travel
• Coors Brewery
• Corus International
• Crown Leisure Plc
• Data General
• Delta International Ltd
• Department of Work and Pensions
• DHL
• Diageo
• Druck Ltd
• Eli Lilly
• EMC
• English Churches Housing Group
• Enterprise
• Experian
• Extrinscia
• First Engineering
• First Quench
• First Trust Bank
• Flight Centre UK Ltd
• Fujitsu
• Future Travel
• Gateway
• GE Frankona
• GE Life
• GE Panametrics
• Great Ormond Street Hospital for Children (NHS)
• Guide dogs for the blind
• Hants CC
• Hays Specialist Recruitment
• Henry Boot Construction
• Holiday Now
• Homeserve Plc
• HP
• Hutchison
• ICAS
• Iceland Frozen Foods Plc
• ICI
• Instant Holidays
• InTechnology plc
• International Power Plc
• ISIS Equity Partners
• ITNET
• Kingston
• Korn Ferry International
• Ladbrokes
• Leo Burnett
• Liverpool Womens Hospital
• Liz Claiborne
• Lloyds TSB
• London Borough of Lewisham
• London Borough of Westminster
• Louis Dreyfus Refinery
• Manchester Royal Infirmary
• Mars
• McMillian Davies Consultants
• mediaedge:cia
• Mentis Consulting Ltd
• Microsoft
• Midlands
• Ministry of Defence
• Mitsubishi Trust and Bank
• Nasstar Ltd
• National College for School Leadership
• National Health Service
• NatWest
• NISCC
• Northampton County Council
• Northern Business Solutions
• Northern Ireland Bank
• Paragon Group
• Parsons Brinckerhoff
• PB Group Services Ltd
• Pirelli
• Pittsburgh Plate Glass
• Pizza Hut
• Prudential
• Royal Bank of Scotland
• Roya London Management Solutions
• Rupert Scott
• Safeway
• SAS Telecom
• Scottish Enterprises
• Serco
• Siemens
• Sound Opinion
• Southern Sound
• South West Water
• Spicers
• Star Internet
• Stenna Line
• Synenta
• Telstra Associates
• The Paper Company Limited
• The Simpson-Birks Partnership
• Thomas Cook
• Thomson Tour Operations
• TNT
• Toyota Financial Services
• Travel West Midlands
• Triad Group Plc
• UCB
• UK-Cellular Ltd
• Unilever
• United Consumer Products Ltd
• United Co-op
• Utilities Network Ltd
• Vertex Data Science Ltd
• Virgin Atlantic
• Waste Management Systems Ltd
• Westminster City Council
• Wickes Building Supplies
• William Hill
• Wiltshire Constabulary
• Winslade
• WS Atkins