Almost immediately after joining the Post Office Alice Perkins was told about software problems and was concerned about a misbalance of power in the Post Office’s relationship with Fujitsu.
Dismissing Ms Vennells was discussed in a paper drawn up in February 2014 for a committee within the Department for Business and the shareholder executive of the Post Office.
A former senior executive at the Post Office was told by auditors the Horizon IT system was "a real risk", four years before sub-postmaster prosecutions stopped.
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