The good samaritans of Kensington gardens

1.05pm: an unconcerned grey-haired man runs past on the other side of the path. A man in his twenties sprints by followed by a shuffling elderly man, who looks suspicious of Katy.

1.09pm: two joggers pass, one turns and asks if she is okay.

1.11pm: balding jogger catches sight of Katy and continues on his way. A woman jogs past, then turns to have a look but keeps going. Two more joggers do too.

1.16pm: four bored-looking teenagers wander past. A woman of Katy's age carefully makes her way to the opposite side of the path as she walks by.

1.20pm: a man jogs by, stealing a quick look. Next is a woman in her thirties jogging with a baby in a pushchair. She stops about 10 metres away and calls out: "Are you okay?"

1.24pm: a young jogger slows down and calls out: "Hello, are you okay?" - but he is followed by three more who run past.

1.30pm: a pensioner in a raincoat eyes Katy suspiciously before scuttling off. A younger man in white running gear flashes past.

1.34pm: an American stops jogging and asks if she is okay. A minute later, an Irishman stops.

1.38pm: a woman is distraught at the sight of Katy. She falls to the ground and asks: "Do you need help? What shall I do?"

1.43pm: a women jogger stops but then two men run past.

1.46pm (pictured): a young man walks past, rubbernecking a few seconds later. A man in his forties takes a break from jogging to inquire if Katy is okay, while a lanky teenage boy wearing earphones wanders past.

1.54pm (pictured): a jogger in a bright red T-shirt suffers a pang of conscience.

1.57pm: a young man passes, followed by four Spanish girls, who point but fail to stop. 2pm: a man in a dark tracksuit strides purposefully past before turning to look, and an elderly woman quickens her pace.

2.03pm (pictured): three men in their twenties run past but all turn around and check on Katy.

2.06pm (pictured): A woman stops immediately and asks if everything is all right. A man in jogging clothes bounds past and another follows.