I would imagine it would depend on whether this was a criminal or civil matter.
I was under the impression that if a judge awards any money or costs in a criminal case, the defendant has to pay it.....although it may only be �1 a week if he hasn't got the money.
In a civil case such as small claims court, the judge can make the descision and award the money but it is then your responsibility to collect the money...either via debt collections, attachment of earnings or a large piece of 4 x 2
I might be wrong though.