You should have a Will dealing with what is to happen on your death in relation to your property and appointing guardians for your children. Usually spouses leave property to each other in their Wills.
This may not be what they want to happen if they separate. Separating from your spouse does not revoke your Will but either a marriage or divorce does. Therefore it is important that when separating, if you have a Will, you consider whether its provisions are still what you want to happen. If not, you need to make a new Will.
If you are married but separated, until you are divorced, if you do not have a Will, under the laws that apply, your spouse will be entitled to part of your assets if you die. If this is not what you want to happen, you need to make a Will.
We can assist you with this and discuss what your options are.