Seven Whitehall departments have agreed to make cuts to help make savings of £11.5bn for 2015, Chancellor George Osborne has announced.
Justice, energy and communities departments are among those which will make "provisional" savings of up to 10 percent.
The full details will be revealed in next month's spending review.
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The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.