If the deceased's estate either included a property or was greater than £5000.00 then a grant of probate would have to be taken in the estate in order to distribute the assets to the appropriate beneficiaries. A copy of the Will shall be attached to the grant of probate and you can order a copy.
For NI you can obtain copies by contacting the registry:-
Probate & Matrimonial Office, Royal Courts of Justice [Ulster], Chichester Street, Belfast BT1 3JF
Tel 028 9023 5111
Just say that you need to search for and order (if held) a copy of a grant of probate.
If there was no probate required (ie. no property, estate less than £5k) then it would be for the executors to decide whether to let you see a copy of the Will.
It is for the executors to distribute the deceased's estate to the beneficiaries named in the Will. If a named beneficiary did not receive their inheritance then they will have a private claim against the executors in their personal capacity.
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