A father whose son was killed in the 7/7 bombings has told BBC Newsnight he thinks the Leveson Inquiry has been "hijacked" by celebrities.

Graham Foulkes said as the "celebrity circus" got involved the inquiry "lost its focus" and "value".

Police told him in 2011 that he was among those whose phones were targeted by a News of the World investigator.

The campaign group Hacked Off rejected his comments and said the inquiry was conducted in a "serious way".

Kirsty Wark reports.