thank you for your replies. here is the recent incidence.. (not massive but turned into a huge deal)
i booked a venue for dd's bday party a few weeks ago, and called him to see if he would pay half towards it (he always attends btw and they have in the past been at my house). He refused as apparently i should have consulted him first. Fine, whatever.
in a conversation the other day about something entirely different, he drops in casually that he has 5 friends coming to the birthday party. 1 of which has never met her, one hardly ever see's her and the other is his newish girlfriend who dd has met once months ago. the other 2 friends she knows. i told him it was innappropriate for them to come for the following reasons:
none of my childless friends will be there, just close family and kids with their parent.
as he is not paying towards the party he is a guest. so to brazenly announce that he is bringing 5 people is very rude and disrespectful. he could have at the very least asked politely.
it will not benefit dd in the slightest if they are there. therefore they are coming for his benefit. which given the above two points, i do not feel obliged at all to enable.
he could not understand my points at all and called me spiteful and mental (as usual)
he then text me to tell me he had let his friends know that i didnt want them there, and that they were quite upset. the 2 friends i know.. i got texts from saying "have i done anything to offend you?" and "can i just come for a bit?" i emailed them and apologised for them being dragged into an argument. i reiterated my reasons and emphasized it was not personal.
we have not spoken since. i have no idea whether ex let alone friends will be there, although ex probably will be as he thinks he is a saint who is always right 
i guess it makes me furious putting up with his shit.. i dont think it is affecting dd right now as a young child, cos he is just 'fun dad'. but i worry about her growing up and him role modelling his (sexist) views around her..