Ian, I need to address a couple of points you make.
First, as others have noted, Niall Allardice (that's me), is an employee of Fundsmith. So Terry is not passing your details onto or inviting you to interact with 3rd parties.
With regards to receiving the email about the IHT seminar, that should have only been sent to investors who had 'signed up' to be notified of such events. I can look into why you received this email if you want but it can only be for one of two reasons:
1. You or someone using your email address signed up, or
2. We've managed to incorrectly enter another person's email into our database (somehow putting yours in instead of theirs, maybe a letter or two difference in the email address?), meaning you are getting these emails from me.
You might have recently received another about an event next week. If you want to email me, I will be happy to look into what's happened and make any corrections. Clearly, if you don't want to receive these emails its important that we correct things so they stop.
Kind Regards
Niall