Husband bringing drunk friends back home

[Tetley08]

My husband goes out a fair bit after work which I'm fine with however we've had some awful arguments the past few months as he's started inviting people back to our flat in the early hours.
The first time it happened I wasn't that upset, it was some guy he works with who was really drunk who ended up asleep on our sofa. We had a bit of a laugh about it the next day, but I did say to him afterwards that I didn't want him bringing people back to our flat again as it wakes me up, we live in a small flat, they could easily wake our son up, and I don't particularly like people that I don't know crashing around my home at 2am. In fact I said to him, if you're out drinking again & you want to bring a friend back, if it's before midnight give me call & if I'm up I might say that's ok, if it's past midnight please don't as chances are I'll be asleep. He agreed with this, said sorry.
Anyway, since that first time, which was back in July, he has continued to bring people back to our flat a further 5 times, always past midnight, usually around 2-3am. The guy hasn't stayed over again as I've told him he has to leave. Usually it's the same guy, the one he works with, but once it was somebody else. Each time it has woken me up, caused massive arguments and it's mostly been during the week so I've had to go to work the next day having had a really disruptive night - a few times I've been really upset so I haven't managed to get back to sleep. When I've asked him why he's brought someone back when I've specifically asked him not to, he's said (whilst drunk), that it's his home, he pays the bills (he's the main breadwinner), and he can do what he likes. He also says that I'm blowing things out of proportion & im being unreasonable.
I'm really upset that he would do this & I can't help but feel like he's doing this on purpose to upset me. He has been apologetic a few times the following day but mostly I think he thinks I'm being petty and silly for making this an issue. The thing that really bugs me is that I have asked him in a reasonable way not to do this, he's agreed, and then he's gone against what we agreed. When you are married surely you respect your spouse & you don't go back on an agreement?
I'd really appreciate some outsiders point of view on this as its really upsetting me & I'm finding it difficult to see things clearly.

It looks like he can't moderate his alcohol intake once he starts drinking and that is a problem if he drinks regularly. This mate is a smokescreen for his excessive drinking (e.g. x wanted another pint etc so I kept him company etc.)

maybe he is trying something new with you and is afraid to express it. Maybe a threesome or something 😜

My dad did this a lot when I was a kid, mostly because the other wives would not tolerate the whole team turning up shit faced, disrupting her and us. I told her when I grew up that she was stupid to allow it, she was working and always got up to make sandwiches and coffee. It was extremely disruptive for us kids.

I would consider how to stop him (lock the door, come out, give him an almighty row, tell his workmates to fuck off, totally embarrass him)

You have a 5 year old child in the flat, this kind of behaviour is like a pissed up immature student thing to do. You've asked him to stop, he agrees then persists in repeatedly doing it. Is he trying to curry favour with his colleagues? Sounds very pathetic. Turning up pissed when you were going to the cinema is disgusting. I'd say he has a major problem with booze.