I had already PMd you about this before seeing this post
But for the benefit of anyone else in the same position....
On the Shareholder registration form at
http://www.imutual.co.uk/shareholder, at the bottom there is a choice of either accepting the Shareholder Agreement (default) or opting out of being a shareholder. This was an option we added in response to requests from some members who preferred not to be shareholders.
If your shares total shows as zero, the most likely explanation is that you actively selected the "opt out" option, and you should then have received a pop-up warning that this means losing any shares.
If you didn't intend to opt out, then that's absolutely fine. Just go back to the form and select the "I agree to the shareholder terms" option. Then
submit a query and ask us to restore your lost shares