Firstly, you should open a file at the Bailiffs. The Chief Bailiff has a range of means his disposal in the case of refusal to comply with a court judgment. These are normally only used some time after the debtor has received a warning to pay up within a 20 day deadline. The harshest option is imprisonment; he can order someone who refuses to pay maintenance to be jailed for up to 21 days each time , for each maintenance debt. After the wife applies for an order to jail him, the Chief Bailiff can jail him without a means test which is necessary for other civil debts.