Waited until the "warmest" part of the day (mid afternoon) before setting off, and managed it ok
Main problem was with the podcast - it decided not start start at the beginning!! Fortunately I managed to find the start of the second run, walked to roughly where I started running last time and played from there - managing to find an extra 90 second walk/60 second run mid podcast once Laura said I had finished to ensure I actually did the correct number of runs. Grr. Have now deleted everything from my ipod and put the podcast on again, so hopefully next time it will work fine!
Tomorrow - off to Decathlon to get some clothes for when it gets colder!!