Ian asked me to come over and help out. A few months back he did pick up a set of genuine BMW tension strut rods and the lower control arm kit (with leveling rod) from me.
As for which "brand" of parts you're looking at in his photos, the TRW branded parts do not have the BMW logos or M insignia on them. Looking at his photos those are the genuine BMW parts.
BLKLYZ to answer your question - genuine BMW parts.