Information by Railway Undertaking. Railway Undertaking shall inform Infrastructure Manager of developments initiated by Railway Undertaking and relevant to Infrastructure Manager regarding access to and use of the Main Railway Network and the Service Facilities. Infrastructure Manager shall share information or process information about those developments with other Applicants to the extent that Railway Undertaking consents thereto. Railway Undertaking shall always provide Infrastructure Manager with the information required by Infrastructure Manager on the use of the Main Railway Network and the Service Facilities, as referred to in section 3.4.6 and appendix 8 of the Network Statement. Information that serves multiple purposes need only be provided once by Railway Undertaking.