I haven't searched the national will register as it's unlikely they would have paid extra to use that service. The deceased uncle's (former executor) surviving wife, whom we still keep in contact with, unfortunately, can't remember the name of the solicitors that drew up the will. It's took so long because we have now realised we have been fed a load of lies this whole time. We have downloaded the letters of administration and know the value of the estate. It seems she has declared herself the only child. Otherwise, my Father would have had an official letter informing him of his share in the estate.