But then she'd also took out the insurance policy to cover the inheritance tax so he was no worse off.
The way I am reading it, from the solicitors evidence, is that IS would have had to pay the IT if he was not married to Helen.
These kind of IT policies are usually set up with standard wording and cover spouse, children etc....
So in order for IS to be able to * benefit* from the policy (ie be able to have access to this insurance pay out in order to pay Helens tax bill ) he would have to be specifically named in the policy ( being as he was not related to her ).
It sounds as though this had not happened.
Remember they were keeping the engagement/marriage a secret.
So Helen thought she had done the necessary by putting IS into the Will.
What she had clearly not done was update the Life Insurance Policy ( Trust ) to pay out to IS if need be.
LI policies are usually ( although not always ) done via a financial advisor and we know Helen had an advisor.
If she had done everything via her solicitor, they would have advised her to amend the LI policy. But, if , as seems likely, she had done the LI policy via her advisor, he would not necessarily know that she had changed her Will to benefit IS and would therefore not advise her to change the life insurance policy.
The possible fall out from keeping things a secret !
As I said, it will be a great line for the Defence. Why would IS want to kill her and have to pay IT at 40% on her estate.