Just a 'proud of myself' post really! I've just come back from the 20 minute run. I didn't find it easy by any means, but definitely do-able!! I found the last 5 minutes the easiest for some reason and probably could've run a bit further but I stopped because I wanted to follow the plan.
I'm really disappointed though as I set my phone off on the 'Runkeeper' app but it didn't work and I was really looking forward to checking my pace and how far I'd actually run. I've manually mapped it but it has only given me a rough idea as I ran over fields and country paths. Never mind, hopefully it will work next time.
Good luck to everyone else who is about to embark on this fantastic plan, it really is possible.