Inheritance Tax Saving
The EU legislation requires you to settle you worldwide estate in your country of habitual residence. This can be different to domicile or tax residence. It also allows for a certificate of succession to be issued between member states to confirm any settlement of an estate in another jurisdiction
This means it is more likely all overseas assets are included in any inheritance tax assessment.
Inheritance tax in Cyprus is 0% between to families, but taxes may apply when marriage or blood relations do not exist under Cypriot law.
If you choose UK law to settle your worldwide will & estate UK inheritance tax may well be applied.