I thought it was the Hammer House of Horror series, but I can't see anything that relates to what I'm looking for.
The plot is:
A family own a house.
The wife keeps seeing a young boy riding in the garden on a tricycle from the kitchen window.
She starts seeing a man walking around her house with a knife.
Later in the movie, she see's a whole family being stabbed in front of her, and she passes out.
She then wakes up in hospital.
While she's in hospital, their house has been sold. The husband gets in the car leaving their old house. Suddenly a man appears from the back seat of the car and cuts the husbands throat
On the floor of the car is a newspaper. On the front page is a picture of an escaped lunatic.
What the wife was seeing, was the future murder of the next family that have just bought their house.
This all I can remember. I've tried doing a Google search, but not having any luck.