After reading around and following a discussion I had about speed variations, I decided to use the short run of the magic plan week 2 to do some intervals.
So I ran 1.5k at 2k per hour faster than my normal snail pace, but I did it in 1 minute blocks.
I had all intentions of doing the full 3k like that but we had a power cut and the treadmill stopped
luckily I didn't hurt myself as the speed dropped off quickly but not abruptly!
Onwards and upwards