Probate is the legal process that gives someone authority to manage and distribute the estate. Not every death requires it.
If your loved one owned property in their sole name, or had significant assets above around £5,000 to £10,000 with most financial institutions, you will almost certainly need probate.
If they owned everything jointly with a spouse or partner, probate may not be needed at all — jointly owned assets usually pass automatically to the surviving owner.
The process involves valuing the estate, completing an inheritance tax return, and applying to the Probate Registry. For straightforward estates you can do this yourself through GOV.UK. For anything complex — property, multiple accounts, inheritance tax liability, or any disputes — a probate solicitor is strongly recommended.