The UK Government Forensic Science Regulator has released a new draft document for comment. The document, Digital forensics method validation: draft guidance, is a rather interesting read. Comments should be sent on the feedback form provided to FSRConsultation1@homeoffice.gsi.gov.uk and should be submitted by 31 October 2014.
It's more concerned with areas known in the US as computer forensics, but it does have a section for audio analysis and speech recognition. It does not concern itself with DME analysis or authentication.