We've recently gone down this route with our ex-landlords because of the new tenancy deposit laws. We got to the stage where we had to get the County Court Bailiffs involved this proved an agonising experience because although we were aware that the landlords had the money / assests to pay they weren't willing to pay up. They then asked the courts if the warrent could be suspended - this was thrown out but we have agreed to get a particular sum of money off them every month. If they break this order then it becomes a more serious matter and gives the bailiffs more rights on claiming back the money.