Ben was 21 months old when he vanished on the Greek island of Kos in July 1991.
He was playing outside a farmhouse his grandfather was renovating when he disappeared.
A South Yorkshire Police search team recently spent three weeks on Kos excavating the land around the farmhouse and afterwards detectives said they believe Ben 'died as a result of an accident'.
They suspect he was crushed and buried by a digger which was clearing land close to where Ben was last seen.
No remains were found during the search but a toy car believed to have belonged to Ben was found on a site where the digger driver dumped land and debris from the building plot he was clearing.
A statement issued by Ben's family on their 'Help Find Ben Needham' page on Facebook reads: "May I ask you to still keep Ben's case out there and if anyone out there has any information on where Ben could be to please get in touch.
"All information given is in strictest confidence.
"The Needham family need to find Ben, to bring him home and to lay him to rest. Once again thank-you all for your support."