In the UK, if you die without a will (intestate) you can leave those you care about to face a number of issues. However if you die abroad without a will, the arrangements can prove to be even more complicated and difficult for your loved ones.
Having a will in the UK does not necessarily mean you will be protected. Every country has its own laws governing what you can and cannot do with your assets.
It is important to investigate this locally and it may be necessary for you to complete a new will in the country in which you reside. For example, some European countries do not allow you to leave your home to your spouse alone; instead you are obliged to share it amongest your children too.