There was a ten year gap between the 2002 appeal and 2012 CCRC application.
This could be because Bamber could not get together enough worthwhile items to submit. Or that he simply had to wait his turn behind the other applications. Probably a bit of both.
So it is optimistic that there will be another CCRC application soon. Especially as the apparent bombshell documents that would free him are being withheld by the police. Or have the police released all documents ? If so, Bamber's team need to make a public announcement saying this.