I have made a will leaving half of my estate to my grown-up daughter, with the other half divided between my niece and nephew. However I wondered whether my daughter might be able to claim the whole estate when I die?
Under the family provision legislation the test is whether the deceased parent made reasonable provision for their children. If you left nothing to your daughter she might therefore be able to go to court to contest your will, and she might be successful unless you had stated good reasons, for instance in the form of a letter kept with the will, for cutting her off without a penny. Since you are leaving her half your estate you would probably be reckoned to have carried out any obligations you might have towards her.