Police have clarified they have checked all cctv on any routes he may have taken (and not seen him), no more police appeals, plus footage seen of someone falling in the water. Although not confirmed as CA, I think it has sadly been accepted this was him. Hull is busy with river traffic, sadly I think there is little more they can do. They won’t keep searching the waterways specifically for CA, but there are always search and rescues, tugs etc going up and down, so a body would eventually been seen fingers crossed.