Continuity mistake: When Mr Griffiths is driving Harriet back to grange hill in his van he pulls up outside some shops for a few seconds in between parking and leaving there are different vehicles parked behind the van.
Visible crew/equipment: After picking up Harriet from the stables the camera, boom mike and some crew members can be seen reflected in the side of Mr. Griffiths' van after he shuts the driver's door.