Will

Hi, my father's eldest brother (Uncle henceforth) built a three storeyed house beside our ancestral house. He was a widower and childless, and my aunt used to live with her family on the ground floor on the premise of looking after him. My uncle died in 1998, leaving a will drafted by a lawyer and signed in sound mind before 2 witnesses stating that the my aunt and her family can live on the ground floor as long she lives, without any alteration or improvement to the area. My aunt's family left the house in around 2003 to live in a flat somewhere else, locking the ground floor. The will stated that after her demise, her family would relinquish all rights to the ground floor which would pass on to my younger brother. My aunt died in 2015, after which me and my father went to her son requesting the key to the locked floor, upon which he demanded considerable sum of money to give up the key. After repeated appeals to no avail, we finally broke the lock and acquired the floor, entering which we found that there were some nick nack and rubbish furniture (A broken bed, and gas cylinder and oven etc. which all have broken and rusted due to complete unuse all these years). he later found out about the lock broken and threatened that he would register a FRI that there were valuable goods of him which we have stolen etc. I promptly took both still and video evidence of the floor as was the state after he left. Now, we want to clean horrible rubbish and repair the rooms and live there, as it was stated in the will. The lawyers that I have consulted have all said that there is no ambiguity in the wording of the will and my brother can attain possession of the floor, whether we probate the will or not. The aunt's son has asked for probate although he has been silent on any court case. by the way, he has never contributed to any property tax payment or maintenance of the house, although the will clearly mandated that as long as mu aunt lived, before she died in 2015. please advise.