AN ex-spy chief will be grilled about a Tory MP who escaped being investigated over child sex abuse allegations.

Dame Eliza Manningham-Buller is understood to have told her bosses in the mid-1980s about Sir Peter Morrison.

But the allegations were suppressed by then-head of MI5 Sir Antony Duff, who died in 2000.

Sir Peter, a close aide to Margaret Thatcher, died in 1995.

Dame Eliza, who later became the MI5 boss, is expected to appear before the child abuse public inquiry next week, The Times reported.

Mr Duff wrote to cabin secretary Robert Armstrong that two sources had claimed Morrison’s “penchant for small boys” but asked that no further action be taken because “the risks of political embarrassment to the government is rather greater than the security danger.”