Forgive me if I’ve missed something, but, do me actually know that he didn’t go to the police prior to his arrest ? Is it feasible that when it was announced LS was missing, that he told the wife and police then, that he had given her a lift. Had he said he stopped as he saw a dodgy looking (sorry Mr Beard) grey long haired & bearded man talking to a sobbing girl on a bench, so he parked up (as per cctv) and went to help. Could the police then have monitored him in the following days and see him heading to the park/playing fields and with the added cctv footage we haven’t been privileged to see, was he fiddling with his jammy dodger as some have previously suggested!?
The guy does appear to be blasé and has managed to convince family, friends, workmates & neighbours that’s he’s a lovely normal chap, whilst allegedly living a lie. Just throwing it out there, I’ll go put my crash helmet on ready...