I did it, I finally managed to do W7R2, after the issues with my knee, and a couple of extra rest days.
I set the alarm for 5:30am, half an hour earlier than usual, had my cup of tea and some brekkie, and drove to where I work. There's a nice reasonably flat new-build village right next door, and the road around the edge means I run for about 4k. I was concerned about my knee. Concerned that I'd be late for work. Concerned that maybe running isn't for me. So I set off walking. After 5 minutes Jo woke up and told me that I needed to get a crack on, so I did.
At this point I realised that Buckshaw Village is not quite as flat as I first thought, so it turned out the first half of the run was slightly up hill, but I just eased my pace slightly and settled into it. As usual, the first 5 minutes took forever, but after that the time passed quickly.
The OCD part of me was annoyed when I got back to work with a few minutes still left, so I went up the road a bit then round Aldi's car park, but I did it. I'm now enjoying my usual post-run drink of water, boiled, having had a tea bag dunked, and milk added.
After the past week, I never thought I'd run again, but I can still run, and it felt good. I enjoyed this morning tremendously, and I think running on a nice smooth surface really helped with the knee too.
Massive thanks to everyone out there who has been advising, encouraging, cheering me on over the past few days. You are awesome!