Why do leaks take place?published at 11:13 British Summer Time 19 July 2018
Public Administration Committee
Select Committee
Parliament
The first set of questions comes from Sir Bernard Jenkin, the Chair of the Committee, asking what makes the civil service leak.
Sir Mark says that leaks, such as the Brexit impact assessments, are done for a "political effect".
He adds that he cannot see many circumstances where "a leak is an appropriate" way of dealing with things.
"Every leak is serious," he states.
Sir Jeremy Heywood has previously vowed to "crack down, external" on civil service leaks. A letter sent by Sir Jeremy warning about leaks was then subsequently leaked.
Back in April, former home secretary Amber Rudd was forced to resign following a leak which showed that she did know of Home Office targets for removals. She had previously told the Home Affairs Committee she did not know of such targets.