Thanks everyone who has posted advice. I can't tell you how much I appreciate it. I'm afraid I'm having difficulty replying as quickly as I'd like as my phone is not working, but here goes...
if you didn't have to worry about money, you'd probably make a lot fewer impulse purchases (having to constantly evaluate whether you can afford day-to-day necessities quite literally wears out both your willpower and your mental capacity to manage your money) Interesting point, Saranova, I think you might be right.
I bet in counseling if you bring anything up its turned back on you? Nothing hostile or critical has been said yet, we've spent the first three sessions setting out the 'context'. It's taking ages and costing ££££... Really sorry to hear, LittleMissUpset that you had such a hard time in counselling. Thanks for the advice. I hope things look brighter for you soon. 
He's just plucked that 5 pounds out of the air, hasn't he, without even thinking about what any of you might need to spend money on. Just thinking about how much cash he needs every day to get his coffee from the machine or grab a sandwich for lunch, perhaps? Rather than all the everyday little things that a sahp will spend money on - sun cream, plasters, getting the bus to the doctor's, new socks for your daughter and a cup of tea while you are in town buying them... Yes, exactly ravenmum. You have expressed my frustration perfectly.
That's mistress money, I'll bet you anything. I wish it was! I'd be overjoyed if he found someone else - would make things a great deal easier for me. I'm sure it's not though - he has a very low sex drive. Our sexual problems are, for me, the main issue, and what I wanted to focus on in counselling, which is why we've not talked at all about money yet.
Stuff relate, you need to talk to a SHL! What's SHL?
he enjoys the counselling? Is it as part of his need to portray this feminist persona? Yes, exactly. He's got the gift of the gab: always got to be right, always got to have the whole world thinking he's a great guy.
Why not accept her money? She might simply want you to resolve things I am sure this is the case - MIL is a very good person. But I don't think she has any idea of the severity of our difficulties, and so I feel that it would be taking the money on a false premise. I've told DH he must fill her in, but I am concerned about that too as it'll upset and worry her (she's very elderly).
Orwellschild, thanks for an alternative view, which I shall think on.
overthehillandroundthemountain, I am so sorry to hear that you are experiencing similar difficulties.
I shall try to find your thread and read the advice you've received.
You're not even working as a team yet you have children to think about. You've hit the nail on the head, BotanicBaby, we just can't seem to find a way of working together.
Did he actually want to have children with you? Yes, he was absolutely desperate to be a Dad when I met him. With hindsight, I think I might have just been the nearest convenient uterus! To give him his dues, he has been a very engaged and entertaining father for DD.
At 40 he would have had very fixed ideas about his life and finances. Yes, for sure. He does seem to have a deprivation style of money management.Did he grow up in relative poverty? He grew up in relative comfort, but - apparently - when there were more difficult patches, FIL made sure everyone knew just how distressed, hard-done-by he was feeling. FIL was one of the most selfish, unpleasant men I have ever come across. Coincidently he also had an entourage of admiring ex-students!
I'll go against the grain here and say I think you should take MIL's offer. Even if the counselling brings you to separation point, you have the chance of a better separation (for want of a better word) with Relate than without. Yes, I was thinking the same. Just have to find away not to feel to guilty about poor MIL's disappointment when the almost inevitable separation happens.
Wouldn't mind betting he has other accounts you dont know about. But you will never know now will you? I think he might have one or two, but with relatively small sums of money in them. Over the years, various things from banks have come through the door, and he leaves most of his financial documents lying around the place - that's how I know about the 24k. He's actually remarkably slapdash about these things. Most of the time he doesn't seem to have a clue what's going on himself, (doesn't seem to understand how mortgages or insurance works, for example,) which is odd as he has to be on top of big budgets at work.
What sort of salary are we talking about here? About 65k, so not astronomical, but we shouldn't be on the breadline either. We live in a very expensive London suburb, if that's at all relevant.
It certainly looks like you have him on some sort of pedestal. Fuck knows why. He's definitely not on a pedestal - in fact I spend most days plotting to leave! But I am conscious that he's DD's Dad so try to see the best him as, whatever happens, we need to get on well for her sake. And I know I've been pretty shitty to him at times - I'm no saint myself, that's for sure.