1 go self employed,make sure your books show your earning nothing,2 get on the dole/sick/esa/ and work casual.
3,get a job with the paddys in eire running in britain or continental work,all you will need is an address in eire and a irish bank account to make it easy unless your lucky to work for a subbie who will pay you cash,.its always best to have an amicable arrangement with your ex,but it shes in ■■■■■ mode then she deserves the same treatment in return.im not sure the money the csa get from you goes directly to her anyway,so shes just dobbed you in to stuff you,though i could be wrong about the payment thing.