He mentioned to me he thinks he should invite them and I specifically said, no, please do not invite them.
He was then phoned by them and invited them to dinner 
He says it was a spur of the moment thing, it just came out of his mouth.
I'm cross with him that he did it after I said not to, feels like he put impressing/placating these people before my opinion. He has apologised and said he should not have done so.
Here's the thing: what should I do?
I do not want these people in my house- we see them fortnightly at a group we attend with other people, I'm fine with that but I do not want to be friends with them.I do not want to discuss personal things with them that are more likely to enter the conversation at a dinner than casually in a group with other people.
(The man gives me the creeps. I think he is an EA. He gaslights a lot about things that don't even matter, eg if he's 10 mins late he will then say 'good job I got here just on the dot of half past' as if it is going to remake history in my head and he was really on time iyswim. That sounds a silly example but he does it a lot about different things).
On the other hand, I can't ask DH to ring up and say 'no, sorry, you can't come'.
I don't want an enormous row with DH,, he knows he got it wrong and he has apologised, but the thought of this man in my house is just bluergh.
(DH wandering around so might not be able to answer promptly )