Helen's advice to ask people to check outbuildings while you wait
is spot on and the list Gill has linked to is invaluable especially .....
"Go out after dark when it is quieter and walk round the local area (especially near garages/other outbuildings) gently calling every so often (give him a chance to answer you). Keep talking as you walk round that way if he is in the area he will hear you. This is recommended in the immediate area round your home (approx 1 or 2 streets away)"
5 days must seem an eternity
So pleased to hear he is chipped. Very much hope you find your beautiful boy quickly