Ok fellow sleuther's this is my take on things re CG's abduction. Don't buy the got in a car theory. (
Pic courtesy of Landgate from 1995.)
IMO BE/CSK allegedly travelled down the access lane and parked up in the church car park which was at a guess 6-8 feet below the footpath/street level. There were trees and shrubbery secluding it from the road.
Frankie and mates saw CG heading toward the church/traffic lights. I propose BE/CSK blitz attacked her in this zone, as it was sheltered from the road and very dark. Once down off the road he really had nothing around. Residential houses were a fair distance away, only a deserted church and commercial buildings at that time of night.