A property is owned by four co-owners as tenants in common (husband, wife and their two sons). The wife died in 2008, leaving her estate to her husband. The husband died in 2010, leaving his entire estate to the two sons. A grant of probate has not been obtained. In order to remove the deceased parents from the title register, does a grant of probate need to now be obtained and, if so, is there a time limit for applying for the grant?