Tom's Midnight Garden is a 1999 British-American family fantasy film directed by Willard Carroll and starring Nigel Le Vaillant, Marlene Sidaway and Serena Gordon.
When Tom Long's brother Peter gets measles he is sent to stay with his Uncle Alan and Aunt Gwen in a flat with no garden.
Without exercise he is less sleepy at night and when he hears the communal grandfather clock strangely strike 13, he investigates and finds the small back yard is now a large sunlit garden.
The next night Tom is unable to find the garden, running into rubbish bins from the modern day instead.
Just before Tom returns home he meets Mrs Bartholomew, who is revealed to be the elderly Hatty.