A young mother and son have been reunited with a kindly stranger who left them a note in passing, praising her mothering skills.
Ken Saunders, from Wiltshire, was tracked down after a social media campaign launched by Sammie Welch, who wanted to thank him in person for his generous gesture.
He took Sammie by surprise when, on a busy train between Birmingham and Plymouth last week, he handed her £5 and the handwritten note.
And today, she and her son Rylan returned the favour, surprising him with an emotional reunion live on ITV's Good Morning Britain.
Watch the moment Rylan thanked Mr Saunders:
Mr Saunders said that after a "long week and a long day", it had been "endearing" to watch the pair together.
Then, he said, the train got increasingly crowded as they passed through Gloucester, and he saw Sammy pull her son onto her lap to allow someone else to sit down.
He lingered on the platform to watch her reaction through the carriage windows, he added, and was initially worried by the shocked look on her face, concerned he might have upset her.
It was only upon reading about her social media campaign, which hit the headlines on Monday, that he realised she was trying to find him.
Watch their emotional reunion on Good Morning Britain.
While Rylan told the cameras he wanted to spend the money on his mother, Sammie revealed she had put it into a savings account for him for when he turns 18 - and said she hoped it would go towards helping him buy a car.
She said she had been overwhelmed by the kind gesture, which Mr Saunders revealed had been sparked by a similar act of kindness by strangers towards his own daughter when she was 18 and stranded at a railway station after accidentally getting the wrong train.