I'm at least going to start this as an ongoing trip report. (I rarely make it through the whole trip as an ongoing report as I either get busy or tired at night.) I'm traveling solo to Edinburgh and then London. I've been to London multiple times, but this is my first time in Edinburgh. (I did have a day in Glasgow and a ltitle under a week in Orkney on a prior trip, but I've never been to the rest of Scotland.)
I usually post each day as a reply. The first night was at Heathrow, so I'll put that in the London forum and then do the Edinburgh days here. Here's a link to the London part of the trip.