Ive repeatedly watched the Howarth St cctv and its pretty clear that a woman gets in the passenger side.
The only way out of Howarth St is onto Cottingham Rd. If he was turning right away from the park it looks like PriceCrunch cctv cameras on the corner would have caught him , if , as is more in line with most theories he turned left towards Libby's home and oak road park he would have had to have gone through the juction with Beverley Road and thats got a big cctv camera.
So its a logical assumption to make that the police got his reg number from cctv and identified him, leading to his arrest on suspicion of abduction.
He may be saying he dropped her near her house on Wellesley Avenue and went alone to the park afterwards and had a



on the bench and then shot off home and depending on the existence or lack of additional cctv between wellesley and oak road park there may be nothing to either prove or disprove this story. Its only a few hundred meteres from the end of Wellesley Avenue to Oak Rd park so the window for being seen by cctv isnt wide.
So it could be the police just dont have that critical bit of evidence that conclusively incriminates him for the crime we imagine has happened.
As Stella8 pointed out someone who flashes and stands there staring in windows dosnt sound like a mastermind criminal , more a impulsive thrill seeker so could he just have got amazingly lucky that all evidence has just disappeared.