I've had time to listen to "Time Traders" and "Reaching The Cold 100" now, nad I have a few comments:
I'm sure Peter plays the tremolo guitar solo on Home, which sounds like a hammond organ.
I think you're right that Peter plays one of the background guitars on Uganda Woman.
It's Peter who plays the spanish guitar solo on Don't Walk Away From Me, and Nigel playing the long end solo.
I have a feeling that Peter only plays harmonica on Can You Tell Me Why, and not slide guitar... but I can't remember from the DVD where they played...
I always thought that Peter played the electric guitar solo on Spiritual Thief, but now I'm not so sure anymore...
Daniel