IT expert Jason Coyne was instructed to examine the Horizon system in 2003 as a neutral expert witness in the Post Office's civil case involving the Cleveleys Post Office branch in Lancashire.

A digital forensic investigator says he told the Post Office that Horizon data was "unreliable" in 2003.

Former Post Office lawyer deflects individual responsibility for a strategy that crushed subpostmasters, blaming the organisation as a whole.

But in June 2001, Julie Wolstenholme, the sub postmaster at Cleveleys Post Office lodged a counterclaim which was to lead to one of the biggest public inquiries in modern times.

IT expert Jason Coyne, who played a critical part in exposing the Post Office Horizon scandal, said he would examine the Capture System.

A former Post Office executive has said he regrets a "missed opportunity" to halt the Horizon scandal in 2004. David Miller, a former Post Office chief operations officer, told the public inquiry ...

Post Office bosses plotted to raid the pensions of wrongly accused sub-postmasters to make up discrepancies in accounts, it was revealed yesterday.

Post Office continued to tell expert problems were not widespread but denied him access to data, inquiry hears.

Public inquiry also hears Post Office discussed trying to persuade expert witness to change opinion.

An IT expert has revealed he warned the Post Office of flaws in its Horizon IT system 20 years ago but his report was "ignored." Jason Coyne analysed data for the Cleveleys branch in Lancashire in ...

But in June 2001, Julie Wolstenholme, the sub postmaster at Cleveleys Post Office lodged a counterclaim which was to lead to one of the biggest public inquiries in modern times.