I'm not sure this answer will be helpful to you, however here is a narration of a court case where I requested and received costs:
CPS drops obstruction case[Edit by Veronica (who has an eye for these things): Wayward " at the end of the URL string ... removed ... and bolding added. Edit this Post to see how it was done]
You might enjoy to read the story of the arrest also, it is just above the entry linked to.
ps: anyone see what is wrong with my bbcode above?
Edit by BBD - sorted Prajna it goes [url=hyperlink]text in thread[/url]

Edit by Prajna - thanks both.