AIREPs (weather reports) are no longer required with voice position reports in the NAT area (Amendment 75 to Annex 3, Oct 2010). The met services get all the data they need (and some more probably) from flights giving position reports via datalink(FMC, ADS, CPDLC etc.). The only time an AIREP is required is if a weather condition exists (e.g. turbulence) which might warrant the issue of a SIGMET.