Hurrah! I did it, I ran for 3 mins!
I do think I cheated a little though as I had a free day pass to a Gym so I ran on the treadmill for the first time, much much easier than pounding the pavements. After the 30 mins of run/walking I went on the bike for 30 mins and rode 9km. After that I had some lunch and a bit later I went for a swim and did 20 lengths.
Really enjoyed this and felt really good, hope I haven't overdone it though. Typing this several hours later and although feeling tired don't have any aches or pains yet. Hopefully tomorrow morning will be OK.
They upgraded by day pass to a week so I will be doing all of week 3 runs on the treadmill this week and am very grateful to be inside running as its so cold.