Just need to record this somewhere. No idea if it is worth reading but bear with me.
Threads over the last couple of days have suggested to me that I am in an abusive relationship.
I've thought it through. To catalogue:
financial abuse-no.
sexual abuse-no.
emotional abuse-yes
controlling behaviour-yes.
Getting in further, I feel I can deal with the last two myself: it boils down to moodiness and passive-aggressive behaviour, both of which I can ignore, and don't happen all that often but the kids aren't equipped to cope with, not mature enough. I'm not controlled in terms of personal freedom in any way.
Even further, the issues are really to do with the way he parents our son. Daughter gets by a lot better.
Even even further it upsets me so very much because it reminds me of my own abusive father, although nowhere near as bad.
So we spoke this evening. Instead of telling him he is a nasty abusive bully, which I really didn't think would move things forward (no shit, Sherlock) I screwed my courage to the sticking point and said I needed to tell him about my childhood. I haven't, before, and we've been together 18 years.
I cried. Hate crying. He hates me crying too, which I figured would be a plus. I can be manipulative too.
The thing that hit home was telling him what my Mum put on my Dad's headstone when he died: "Thy Will Be Done". After 36 years of never answering back and not standing up for her kids she gave him a sick joke to wear for all eternity. He was 
And he promised:
That once they have been told off for something (lively kids need telling off for things at times, I do agree) he will then stop and not keep going back over it like my Dad did.
That if he is having a bear-with-sore head day I will take the kids out/he can retreat to his study/cave and sulk without any of us having to be upset.
And I promised:
That if I am unhappy with him telling the kids off/the way he is telling the kids off I will not kick off at him in front of them as it frightens them, and we will talk/row/whatever later on, out of earshot.
And we both: told each other we love each other.
I hope that's progress, and I will watch and wait to see.
Bloody funny to be feeling like a scared kid again at nearly 50, but it's the ghost of my Dad, not the man sitting unsuspectingly across the kitchen table from me right now
So that's it. Many thanks to all who have offered insights today, it's been really helpful.