Why should the taxpayer pay for Trade Union officials?

Following several previous posting, most noticeably this one from September 2010, this one from March 2010, this from March 2010 and this from March 2011, I note that David Morris MP has raised a question today:

"There have been press reports recently that money earmarked for frontline NHS services is being used by hospitals to pay salaries to Trade Union officials. Does my Rt Hon friend (Andrew Lansley) believe it is acceptable to spend taxpayers’ money on union hatchet people and will he order an urgent investigation."

This may be a subject that more people will pick up ion and about bloody time too.