Shortly after moving into the cottage, Graham Merrill heads off into the village. As he closes the otter flap he's wearing wellies. On the way down the hill he's in shoes, but when he arrives in the village he is back in welly boots.
@ 49:30 - Mij catches a fish and presents it to Graham Merrill, standing at the river bank. Merrill is wearing a grey knitted wool sweater. In the cut shot of him picking up the fish - the sleeve is a green oiled cotton sleeve and after the cut shot he is standing holding the fish - back in the knitted grey sweater.
Graham Merrill enters Victoria station and buys a train ticket to Scotland at Marylebone. To get to Scotland he would need to travel from either Euston or King's Cross.