There are various "other" websites and software that purports to select NOTAMs. Avbrief is one that I have personally used and there are others that are linked directly into semi-automated flight planning processes.
People have their personal preferences. I and others that I know prefer some of the non-NATS sites presentations and their improved ability to select RELEVANT Notams. On PPRUNE we did have a go about the new UK AIS site, as I recall. IMHO it had not improved much - we have just got used to it.
However, at the Board of Inquiry, after the event it may be better to say that you sought your information from THE official AIS site. Over the years, I have noticed missing NOTAMs and activity that should have been NOTAMed but wasn't.
Perhaps we should ask Mr Rumsfeld about "knowns" and "unknowns"