The notion of stashing away £1500 to spend on yourself is just stupid.
For a start you don't have that sort of money, and when you have two children, and after a period of maternity leave, you won't have that kind of money spare for quite some time - because he will have spent it on a holiday - for himself!
And let's face it - if you did have that kind of money spare, but that's all you had, you wouldn't spend it on yourself. You'd put your children's needs first.
Whereas he puts himself first.
I think you have far bigger problems than this "lads' holiday".
we are a family and a team in my eyes which means he has to consider us all... No??
Well no, obviously not. As far as he's concerned, it's his money and he can spend it how he likes because you're picking up the tab for everything else. What does that say about his commitment to you, and to being a father?
he went on holiday 3times last year - two one weeks and one weekend - so I never usually stop him doing anything...
due to me being better with money I hold both cards to ensure payment of bills on time and I do all food shops etc I also earn more than my DP, which I do not at all hold against the holiday, if baby wasn't coming it would be a completely diff story
You say you want an equal relationship, but that's precisely what you don't have.
No wonder he thinks he can just do what he likes - because he can, while you're there to pick up the tab and organise the finances so that he can do these things.
You need to start saying no. When you do, and you stop being his meal ticket, you'll soon start to get the real measure of this manboy.