So, on the advice of a few of you, I decided to go for an early morning run before work.
4.50 - alarm goes off
5am - get out of bed
5.15 - start the 5min warm up walk
5.30 - my eyes finally begin to open and my body wakes up!
I am really not designed for early starts, but I do feel good arriving at work after both a run and a cycle (I ride to work each day). Also, this running lark really is getting easier. I did a new route, and just kept going. Felt I could have gone on forever, which is a massive step forward from where I was before C25K as I couldn't run more than a few metres before thinking "I can't be bothered with this, let's just walk"