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Amey
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British Gas Metering Operations
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E.ON UK
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EDF Energy
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Energy Assets Ltd
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ESP Utilities Group
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IMServ Europe Ltd
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Jersey Electricity
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Lowri Beck Services Ltd
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Magnum Utilities
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MANX Utilities Authority
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Morrison Data Services (formerly G4S)
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Morrison Utility Services
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National Grid Metering
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Npower Meter Operator Services
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OnStream
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Providor
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Siemens
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SMS
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SP Dataserve Limited
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SSE Metering
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Utilita Field Services Ltd
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WPD Smart Metering