Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Was the Will made after the marriage?
Why was your partner not in his life when it was made?
How old is your partner now?
Was he receiving any financial support from his father?
My apologies - I meant has he been financiall supporting your partner recently - in the months prior to his death
Then I am afraid that there is no claim that your partner can make on his father's estate - he will be reliant on the good will of his step mother and sisters
I am sorry but the fact that his father did not change his Will means that there is nothing that can now be done
Please ask if you need further details
Then he could potentially have made a claim on the estate using the Inheritance (Provision for Family and Dependents) Act