I was browsing the subscribe endpoint recently and found that clicking on the link (attached image) returns 0 results:
Would be good to adjust the link to return the right results (maybe something changed in the catalogue implementation) so that subscribers can find the supported events and the filters that correspond to each of them.
This is the as-is query: https://digital.nhs.uk/developer/api-catalogue?query=mns+event+publish-subscribe
I have found that something like this should give you what you want: https://digital.nhs.uk/developer/api-catalogue/Taxonomies/publish-subscribe-events?query=MNS
But it could be worth creating new tags/taxonomies to make querying easier.