Well the first 3 week cycle of the Pete Plan is now finished and tomorrow the whole thing starts again. It will be interrupted next week by a trip to China but maybe the rest will do me good. While I feel the intervals have been going well, the hard 10k on day 6 has been a real struggle. The last 2 have resulted in handling down, and although I tried again and did better later in the day its still a bit demoralising. Maybe at 43 it requires longer to recover from hard sessions and I need to substitute in a couple of UT2 sessions to aid that recovery. The PP07 seems to recommend steady sessions at pb+5-7 rather than pb+3.
To summarise the first cycle interval sessions:

8x500 @ 1:54.2 (too slow and I will be aiming for sub 1:49 tomorrow)
5x1500 @ 1:55.3
4x1000 @ 1:51.9 (horrible session)
4x2000 @ 1:56.4
Short pyramids @ 1:49.9
Long pyramids @ 1:57.9

The aim now is to do all but the last interval at the above pace and then go faster on the last one to set a new target.