I've just been watching the reenactment of Nicola's walk on Sky. I am struck by the ten minute gap, where she only covers 150m from where she is standing, to the bench where (presumably) the phone pinged. The timings and positions are based on sightings and phone location information. It seems to leave a gap of ten minutes where she would be standing still or moving very slowly for a significant amount of time. The TV presenters stopped at this point, to make sure they were on time target. When they stopped, they were very close to that strange brick building next to the river path.
I know it is perceived by many to be clutching at straws to imagine Nicola disappeared down the lane and out of the field, rather than into the river. But I wondered if, during those 10 minutes, she retrieved a bag that had been placed in the brick building the afternoon previously (when she was alone in the house and her parents had taken the children). That would then give her time to sit on the bench, with the phone next to her on speaker, while she removed that distinctive jacket and replaced it with something in the bag, maybe put on a hat and sunglasses, before telling the dog to stay and leaving at pace through the gate, before the man discovered the phone and dog,
Has there ever been any mention of missing clothing/a small bag? It wouldn't need to be a lot - a different jacket, a beanie hat, glasses scarf round her face. Then she could put the large gilet in the bag and without the dog, anyone who might have seen her that morning would not necessarily recognise her. JMOO, MOO