I would be grateful for views on this please.
My partner was taking our children (aged 5 and nearly 2) to the shops. He crossed the road (side road, not busy) outside our house. On the other side of the road, two people with a toddler (who he had not seen before) asked if they could borrow an allen key to build a table. He left the children with them, crossed the road, came back into our house, got the key from the kitchen, and went back out to the children. They would have been out of his view (on the pavement) for 20-30 seconds at most. Is this considered reasonable or should he have taken the children back into the house with him? We have different views on this.