Liberal Democrat Lynne Featherstone has replaced Norman Baker as crime prevention minister in the Home Office.
The Jewish MP has been moved from her role in the Department for International Development following Mr Baker’s resignation on Monday.
He quit after claiming a series of clashes with Home Secretary Theresa May over drugs policies.
Ms Featherstone, Hornsey and Wood Green MP, said she expected no such difficulties. She previously worked in the Home Office as an under-secretary for equalities.