North Yorkshire Police have been contacted 15 times after a BBC Crimewatch appeal about an aggravated burglary.
Four masked men broke into a house in High Birstwith, near Harrogate, in December 2013, and threatened the family inside with crowbars.They stole shotguns, a rifle and expensive jewellery before driving away in the family's Porsche.
After the appeal went out last night, Crimewatch received eight calls, an email and a tweet. North Yorkshire Police received another five calls.
Det Insp Andrea Kell said: "We received some encouraging calls, particularly about the stolen jewellery. These will be followed up over the coming days."
A family left traumatised after masked burglars attacked them at their home in Harrogate will appear on television tonight in a bid to catch those responsible. The Kempley family were attacked with crowbars in December - and feature in this reconstruction, to be shown on Crimewatch.
Police have had an overwhelming response following a national television appeal to help solve the murder of a child 21 years ago.
The body of 7-year-old Nikki Allan was found in a derelict building in Sunderland - she had been stabbed 37 times.
Detectives are following a number of new leads after the case featured on BBC's Crimewatch programme.
However, Nikki's mother says she cannot allow herself to dream that her fight for justice could be a step closer.
Watch the full report from Kenny Toal below.
David Hines, from the National Victims Association, says the word 'closure' is not something he is able to use. He has spoken after the appeal for information in connection with the murder of Nikki Allan in 1992.
Sharon Henderson, the mother of Nikki Allen who was murdered in Sunderland in 1992, says she fears appeal responses could be hoax calls. The BBC Crimewatch programme broadcast an appeal for information and police said the response was 'overwhelming'.
A grieving mother from Sunderland hopes a national television appeal tonight will finally end a 21-year battle to find out who killed her daughter.
The body of Nikki Allan, 7, was found in the basement of a derelict building three hundred yards from her home in Sunderland.
She had been battered over the head with a brick and stabbed 37 times.
Millions of viewers will see the case re-examined on BBC's Crimewatch programme.
Sharon Henderson says it marks the next chapter in her long fight for justice.
A grieving mother from Sunderland hopes a nationwide television appeal will finally end a 21-year battle to find out who killed her daughter.
Nikki Allan was just seven years old when she was stabbed to death near her home in 1992.
The case will be re-examined in front of an audience of millions when it is featured tonight on BBC's Crimewatch programme.
Her mother, Sharon Henderson, said it marks the next chapter in her long fight for justice.