I've just come back from a lunchtime run around the track and I managed a comfortable 15 laps (which is 6km). I was really pleased with this even though I am jogging at an excruciating slow pace as it means that I'm not far off being able to jog for 10km continuously and comfortably.
My plan from now on is to try and fit in a shorter run twice a week (i.e. no more than half an hour), to try and quicken my comfortable jogging pace, and then have a longer run once a week to build up to 10km!
For the longer run one of my pals has suggested that I listen to audio books as they help the time along without potentially disrupting your pace as music sometimes can. I think this is a fab idea and will attempt to procure some audio books and a listening device anon. If anyone else has any helpful ideas, then please post them here as I would be happy to receive them :o)