Sir Denis O'Connor, outgoing HM Chief Inspector of Constabulary, will give evidence on Olympics security.
Stephen Greenhalgh, Deputy Mayor of London for Policing and Crime, will give evidence on policing in London.
Metropolitan Police Commissioner Bernard Hogan-Howe has also been asked to give oral evidence.
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Actor Bill Murray has offered to pay for the mobile phones of two fans he allegedly threw from bar after they tried to take photos of him.
Inadequate pain medication means cancer patients who want to die at home have no choice but to go to hospital, charity says.
Nearly three quarters do not get paid for the extra work they do, including teaching lessons, according to survey.