Paul,
Again not a Ryanair Pilot, heck not even an Airline Pilot (yet) but I live your way so no roughly what you are seeing. STN arrivals do not use the Lambourne VOR at all. However there are some departures which use it. You'll see these at about 5,000ft at high speed. They come over Lambourne on a South Easterly heading and then turn South to fly over the South Coast near Lydd, Kent.