whitewave.
Core Participants can be represented by a barrister and can also cross examine witnesses, also make opening and closing statements. They have advanced access to e.mails and evidence before it is presented in court. All Core Participants sign a confidentiality agreement and cannot leak witness statements, hence the bad behaviour of the person who wrote to Leveson to apologise for not adhering to his agreement.
I am not aware that they have any power to request information can be withdrawn. The list of Core Participants is huge, varying from Victims, Police,
Newspaper Groups, Labour M.P's etc. This subject has surfaced because the government ministers are late in the day to ask for Core Participant Status. All the others applied earlier. There is no conspiracy but after the public outcry over Hunt it is wise for them to take advantage of Core Participant Status, just like all the other witnesses before and after them.
It certainly will be interesting.