I don’t really mind if the tenants get annoyed with me, for numerous reasons I think they are inconsiderate (the noise, blocking my access to my garden by parking 2 things in one space, putting a basket ball net up by my window). The landlord is already aware of the noise because she is one of the co-freeholders so I asked permission to do the soundproofing, she asked if the tenants were causing a problems, I was a bit too diplomatic and made out it was more of a mutual thing as I am quite noisy too, but she said she would have a word (if she did it made no difference). So worry she might be miffed if I escalate things with the tenants without mentioning it to her first. I would also quite like her to get involved as it is a leasehold property, we all have clauses about not disturbing each other and so I would like those to be abided to, think if I mention that myself (as presumably my lease conditions would be the same as the ones anyone living there) it would be crossing a line, acting like im their landlord