Lord Brittan will not be commenting on a report that he was questioned by police in connection with an alleged rape, his spokesperson said.
The 74-year-old Conservative peer was questioned under police caution last month but was not arrested, according to the Independent on Sunday.
Lord Brittan is understood to have strongly denied the allegation.
More top news
Tony Davies was the first civilian to reach Pc Palmer after he was stabbed during the Westminster attack.
Defiant Londoners put on a show of solidarity for the victims of the Westminster terror attack at a vigil in their honour.
Weather set to improve with plenty of sunshine by Saturday