There are some jobs that are really hard to fill.  Advert after advert produces candidates, but none with the necessary experience or skills. 

At Luton we found that many candidates being turned down had much to offer and just needed training and support to bridge the gap. However, our processes didn't allow us to appoint them and pay them for work that they didn't have the skills or experience to undertake, so we ended up turning down good candidates who had real potential.