The Prime Minister spent much of the day in this area trying to woo new voters. But how much should he be worried about his own seat in West London?
It should be safe. He is the Prime Minister.
As elsewhere across the country, this is a constituency where little can be taken for granted.
Our Social Affairs Editor Jackie Long has been to the seat, finding old political allegiances shifting and sometimes strange new ones being made. But will it be enough to alter the result?