There are no official approach paths on the UK AIP ( http://www.ais.org.uk ) for EGNT that follow what airliners use (If from the south west, they'll approach via P18 / UP18 and if heading for 25, turn east and fly over Washington then over the coast (I think there's an old NDB at Souter (SJ)) before making a turn onto the localiser)
There's a chart on the egnt website that shows the general approach and deparature routes used. www.newcastleairport.com/flight-paths - but I doubt those intersections can be found in the PMDG FMC.