Just caught up with all the news. As far as I'm aware, Spedding hasn't been given the all clear, so my opinion is the police may have something on him. I seriously doubt the police would be using all the resources to search an area near Spedding's home, unless they had good reason, unless it was purely coincidental. Having said all that, I'm still incredulous that even if he decided to visit Grandma's house to fix the washing machine on the spur of the moment without informing her, saw William and nabbed him - that it was so brazen and no-one saw his van in the street (including Grandma and the mother).
His current behaviour seems at odds with the earlier "close to a nervous breakdown" I have to say.
With regard to the "S" missing on his van - looks like someone's peeled it off, which doesn't surprise me either. I'd say someone not lost on the word play did so when his van was parked somewhere. I am surprised he's not phased by it however and hasn't either covered up the entire wording until he could get the "S" replaced or got it replaced before venturing outdoors.
