UK Mobile Number Portability (MNP) Operator Steering Group (OSG) website
This site is designed primarily for use by members of the OSG to access working documents under password control.
Job Vacancy
MNP Setup Guide for new operators
Customer Tips and Advice when porting
 OSG Documents
 Reference Documents
 OSG Constitution
Application Form to join OSG
Summary of costs of joining OSG
MNP Status and Background
UK Switching Process Manual (issue 2)
Industry Guide for user
Consolidated General Conditions incl GC18
OSG Passworded links
 Ofcom links
 OSG Administration Commmittee 
OTG & ORG Shared
Industry Switching Changes
 Ofcom Numbering Policy link
Ofcom Number Availability
Mobile Portability Prefix Codes (Excel)
Communications Provider Identity ("CUPID") codes (Excel)
Public email address:
Email exploders for members