George Bush Sr has been moved into intensive care after suffering "a series of setbacks that include a persistent fever," according to a family spokesman.
Doctors are "cautiously optimistic" about the 88-year-old former president's health, he added.
Video report by Debi Edward.
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School funding is shooting up the list of voters' priorities as the General Election approaches, according to researchers.
The Conservative and Labour leaders are expected to use PMQs on Wednesday to push their main campaign messages.
Surrey Police has been criticised for handing back John Lowe his shotguns months before he went on to shoot his partner and her daughter.