Once you change your Tax Jurisdiction more so than ever you need to pay special attention to Estate planning and making Wills.
This will depend country to country but for example the United Kingdom will allow you to become a non-resident for income tax purposes but when you die they expect to be paid the full inheritance tax based on your worldwide assets.
You can mitigate some of this by putting certain assets in trust but then you are somewhat restricted on how you use those assets.
The most important piece of information we can give you is if you own assets in overseas countries have a will made for each country you hold those assets that will save a lot of issues for later on.
We go into more detail on this in the Wills and Succession Planning section.