When NYP arrested PH, they also digged up the pub cellar. So, either they'd received what they thought was a genuine tip off or they knew CL's body wouldn't be in the pub, but they thought they might find something else incriminating stashed somewhere (eg drugs), so searching the cellar for CL's remains was just an excuse. I'd be interested in your views on that, sleuths.
The idea that CL might have been taken to the Ac area is because of NYP emphasising its relevance and the fact that, if she was abducted that evening in the black SUV (maybe lured into it by someone she trusted), the perps would have got out of Heworth asap and taken her to a less suspect part of town to do whatever they did to her. I stress that this is all hypothetical and only informed by tenuous indications, or I would have contacted the cold case team by now. I am sure that they will have considered this sort of scenario and speculations per se are no use to them at this stage.