Kate, in case you haven't done so already, I suggest sitting down with your husband and telling him how this lack of freedom is making you feel. The best time for it is when you're both relaxed, not right after he comes home from a busy day at work or after his football team just lost a match. Pick a good time when you're both relaxed and ask him if he has time to talk.
Before you do this, go and list down all the things that you feel because of his refusal to let you work. It doesn't matter if it makes you feel like a domestic helper or a pet dog or a white elephant or simply bored, just list it all down. Then go through your list to make sure there aren't any statements starting with "You." Nothing like "You do so-and-so and it makes me want to scream." You'd just make him defensive. Practice what you're going to say and make sure it focuses on you and your feelings or thoughts. Tell him you'd appreciate it if he could help you improve/feel better/feel fulfilled/etc by giving you his blessing to work. Let him know that although you understand you don't need his permission to work, you have been respecting his wishes by staying home but it has left you feeling restless and in need of fulfillment (pick a more appropriate word if this isn't right for you).
When you do sit down and talk to him, let him know you're serious, but don't get emotional. Make sure he understands this isn't just a whim and that you've thought this through very well.
If he's the type who might appreciate a little preparation, do your research before the talk so that you can show him a list of your prospects. If you know he'd rather not see you planning without his permission, don't show him a list.
I really don't know if you're as submissive as your previous posts seem to show, but if you are, you'd know the best way to approach him without undermining his dominance. If you aren't submissive, just go for it and he might appreciate that you're taking charge.
Oh, and don't forget to let him know you appreciate that he brings home the bacon and that he gives you everything you need without being asked.