The family of a British girl who disappeared in Australia more than 55 years ago has welcomed a decision by prosecutors to consider reopening her case.

Three-year-old Cheryl Grimmer disappeared from Fairy Meadow beach in Wollongong in January 1970. Despite extensive searches, there were no leads.

A suspect was charged with her abduction and murder in 2017, but his trial collapsed after his teenage confession was ruled inadmissible. He denies any wrongdoing and prosecutors dropped the case.

After public pressure - including from the girl's family - the New South Wales (NSW) director of public prosecutions now says her office is willing to conduct a special review of that decision.

In a letter to Grimmer's family, Sally Dowling said the normal time limit for families to request a review had expired, but that she had agreed to look at the case anyway.