Apologies for the vague-ness of this as it is my friend who has the possible problem .. not me.
His aunt recently died and he and his wife were the closest relatives (in the amount of time he spent looking after her and her house etc). The aunt often mentioned that they would get 'this, that & the other' when she died. It now seems that her latest will was written about 30 years ago and she leaves the bulk of her estate to her solicitor who drew up the will. He is now dead and it seems his offspring will inherit instead. There are also small provisions for her neighbours at that time (who she hasn't seen or been in contact with for over 25 years.
Perhaps I have a suspicious mind but it seems a little bit strange to me.