Hey I fixed this problem…
The steps I needed to follow were:
attach the WDTV Live directly to the cable modem via an wired ethernet connection
then perform a factory reset
Once the iView option appeared it remained there even once I re-connected via my internal wireless network.
Really odd though, because I did factory resets, and hardware resets whilst on the internal network and I never saw the iView option.
It was my understanding that the WD does ip based geoblocking and I assumed that this would be dynamically done each time the services feature was selected. Now I suspect it does the geoblocking once, upon initial factory reset and not redone after that,. I still not sure why that initial geoblocking failed for my internal network but worked on the cable modem direct connection.
Anyhow all working and I am happy. Just posting to let anyone else know.