Well, I have just got back in from completing my 2nd run of week 2 and I haven't had any major problems to report. My lower legs did feel like I had weights attached to them again once I had done a couple of runs but at least I don't seem to be puffing and panting as much to recover after each running section.
I did go wrong somewhere though because Laura said I was almost done and so I finished what I thought was the last running section and started to walk back towards home when she then announced that I had this final run to do! "Oh shoot!" I thought, and so I had to run off in a different direction from where I live in order to complete the run and still give myself enough distance to cover in order to get at least 5 minutes walking in afterwards. What a plonker, eh?