04:45 UPDATE
The on-going iBus issues are still not resolved. Please be assured engineers are doing everything they can to to resolve the problem. Please continue to advise driver's to call 999 for emergency assistance.
We are experiencing a system wide connection issue with the iBus radio system. This has been escalated to the highest level,
For emergency assistance drivers are requested to dial 999 directly and then pass full details to iBus control who in turn should pass to the NMCC.
For all calls into the NMCC use 0344 251 0160 option 1 (ongoing diversion related calls, option 2).
Updates to follow
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IBus is now working again.