Ruth Longbottom - the station thread like you say turning up to get her kids after Elijah has taken them to the station
Noah - being brought in by wesley woulds like a good way to do it, clearly wasting police time
James - James can be come across on the beat.

Ben ward - he could be on the pier fishing when they are out on the beat, that would be a good one to tie in with elijah.

tristan is obvious