@Neil ***********
I haven't forgotten you. There are 101 guides to 90 day reporting online, none of which mention that you have to register to report online. That is beyond stupid. But the plot worsens in that it was always more than a little opaque as to how one might register - the rest then falls into place. At this minute I'm failing to find any link for registration, but will keep trying. Bits of the Immigration system seem to be down today - maybe that's why.