There is a parcel locker in the Scotmid; I don't know what operator/brand/etc.

This is the location of the Black Dog pub, that also has a food kitchen: https://www.theblackdog.nl

I think that pedestrians do have a legal right to use the roadway to walk here, but because that is a regional default, and because routing for pedestrians might unexpectedly follow this road given the foot=yes tag, when sidewalks/other paths would be more appropriate, I think it might make sense to delete the foot=yes tag here?

There are some toilets within the open-facing south-west corner of the building here.

The wooden pyramidal structure, An Ceann Mor, here has been removed due to structural issues: ref: https://www.bbc.co.uk/news/articles/cn0zg5xrrnqo

There's a public-access defibrillator outside of the Parliament building around here; it's next to a (I think computerised) information display board.

There is a mobile phone shop/repair store that has opened at number 31 here.

Other platforms at Edinburgh Waverley have a train stop position mapped - platform 18 doesn't seem to at the moment. Ref: https://gauss.whz.de/ptsa/details.html?region=gb&plole=286267