Death of joint owners

My grandparents owned their house as joint tenants. My grandmother died three months ago and we didn’t get round to notifying HMLR. My grandfather has now died. If I get probate for his estate can I then apply to register the land in my name as executor? Thanks 
 

Mark - once you have probate you can. if you wish, register yourself as the executor - see our online guidance for more details as appropriate - HMLR Guide: Start - External  · HM Land Registry