Update of my previous post landlord wants to control me

Yesterday landlords so called brother who showed me and rented me room came to house and he said some smell coming to my room. Which was a lie because there was nothing. Then when I told him he cannot enter now . He needs to enter someday else he constantly banged my door very loudly for 30 min. Said he has key and he will enter if I do not let him. I called 911 and hold him for 30 min maybe and then he was almost breaking door so I let him enter and he found so smell and he switched conversations to heater. Said it was fire hazard so he needed to come shortly after police arrived and I told them details . Then my partner picked me up I went to his mom. I was scared to death it was 11pm at night . Also during that period landlord wasn’t obviously there . I will call council n serve him notice for first tier tribunal today . Anymore advice will be appreciated