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Numbering Research
In this section
London Telephone Numbers
New sub-range for London: (020) 3
Evaluation of Directory Enquiry Services
Ofcom/ICSTIS research - March 2006
Evaluation of Directory Enquiry Services
Ofcom and ICSTIS research - March 2005
Evaluation of Directory Enquiries services
Ofcom and ICSTIS research - June 2004
Telephone Numbering Program: The London Project
(177 kB)
Market research to assess the impact of the introduction of (020) 3 numbers, and to inform the development of Ofcom's communications campaign. November 2004
London telephone numbers: New sub-range for London (020) 3
(154 kB)
This report provides an overview of the key findings of residential and SME consumer awareness and perceptions of London dialling codes, taken from surveys conducted in August 2004.
Evaluation of Directory Enquiries services
(252 kB)
Ofcom and ICSTIS research; May 2004