If Probate has been granted, you can obtain a copy of the will, presumably via the Government or Probate Court. The government web site Wills and Probate section will have details on this. The Will will have details of who stuff is left to and the names of the Executors.
However, probate can be quite slow, so its possible the house is not abandoned, just people are stuck either waiting for the probate grant so they can distribute / someone may have contested the will / they may be waiting for the government department that assesses over payments of social security etc who are based somewhere in the Forest of Dean. That lot are notoriously slow and they do not even start to contact you until after probate has gone through. We are talking 6 months to a year of waiting for this department…. Noting can be distributed until they finish with you according to their letters, which have quite a threatening tone even though none of it is the Executors own faults.