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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The Duke of Cambridge is to end his role as an air ambulance pilot and become a full-time Royal, Kensington Palace has announced.
The UN released the before and after images and described the damage, reportedly caused by Islamic State, as 'a new war crime'.
The 16-year-old's body was found on January 16 on a pathway in Dinnington, South Yorkshire.