Upon inspection of the bowed stud upright (see earlier) I decided that it was not enough to worry about, probably only 3mm at most in the middle of the wall. What I did need to do, before drywalling the door frame area, was to collect all of my cabling to run from the airlock to the desk. You'll see from my earlier checklist what these are. I did make one change to this though. I hadn't decided what cable to use for the computer switching and then I came up with the following solution: I would run an additional CAT5 cable into a socket just like the others and attach RJ45s to the ends of my switching cables. This means that effectively the PC switching is done between two CAT5 sockets. This has the added advantage in that if later I decide to abandon the PC switching this way then I still have a spare CAT5. Before deciding this I checked into the PC switching/LED specification and whether CAT5 is suitable and it is well within this - so a great job all round. Actually this results in there being another spare CAT5 socket in the airlock area so I'm actually going to run another CAT5 between here and the desk. Actually this will be ideal for phone link - I had forgotten about having a phone in there!
Anyway, having sorted everything with the data/PC cabling I set about running this into the doorway stud-work. I worked this out to be 11 in total including an additional USB lead and the extra CAT5 - check the list earlier on this page. Basically I added a small piece of sloped timber to the sole plate near where the PC lives. This gives me a point to which I can clip each cable. Because the piece is curved it allows the cables to bend down progressively in the direction of the floor without any tight bends. From there they will run towards the desk in the floor. With all the cables nicely clipped down I rolled them up neatly and wrapped them in cling-film to protect them from dust and keep them together.
With the cables in situ I went about drywalling the doorway. All pretty straightforward actually and it's nice have the entire room lined and all of the mineral wool concealed. That took me till the end of Saturday.
OK, I spent Sunday morning caulking the joints and screws - as always quite a time consuming job though quite rewarding to fill all those gaps, crevices and screw-heads. I good mornings work and spent the rest of the day with the family. I just have a few bits of caulking to do on this layer - though I've only got one tube of caulk left out of the 12 box. Screwfix this week for this and a few bits and bobs.