Beer is giving a run down of some of the more technical issues with disclosure of documents related to the Post Office inquiry.
He says the matters the inquiry is investigating span two decades.
To proceed with hearings, the inquiry has had to prioritise its disclosure to core participants, he says.
Beer adds that there may be a need to recall some witnesses to ask questions about documents that had not been processed in time to ask them questions about them in the coming weeks.
Stay with us as we bring you more detail as we get it.