More than 100 suspected rapists behind attacks in London going back more than two decades remain unidentified, despite detectives and forensic scientists discovering their full DNA profiles during a trawl of unsolved cases.

Forensic scientists have the full DNA profiles of more than 100 suspected rapists behind attacks in London going back more than two decades.

Florence Nightingale may have had a point when she insisted 150 years ago that open windows were the hallmark of a healthy hospital ward, according to a microbiologist who believes air conditioning and an ultra-sterile environment may actually contribute to infections.

The digital revolution continues at publisher and events organiser Reed Elsevier, where print is down to just 22 per cent of turnover.

An unlicensed cab driver was jailed for five years at the Old Bailey today for raping a passenger nearly 17 years ago.

Members of the public will be able to rate care homes for the elderly on a new TripAdvisor-style website, under plans being developed by the Government.

Proposals by the head of the UK border force for controls to be relaxed further prior to the start of a pilot scheme this summer were rejected before he went ahead with them, Home Secretary Theresa May said today.

Theresa May launched an independent inquiry last night into claims that the UK Border Agency dropped some passport checks to cut queues.

Halt! Who goes there? It's a refrain we all know from childhood, the stuff of fairy tales and war films (alongside a bit of "Hände hoch!"). And how did one respond? Friend – or foe. Of course, it wasn't too difficult to crack that system and lie to get behind enemy lines (at least on the playground). As far as systems go, it ranks right up there with using "1234" to unlock your phone or "password" as the password on your PC.

The Home Office denied making a U-turn on its promise to delete the DNA records of innocent people yesterday, after it emerged that the samples will remain in forensic-science laboratories but in anonymised form.

The number of people diagnosed with cancer has increased by 20 per cent in the past decade, according to Office of National Statistics figures released yesterday.

Hundreds of police officers and staff have been disciplined for abusing their access to confidential databases, figures showed today.

When you make your next purchase online, Sir Martin Sorrell will probably get to learn of it. The Briton who heads the world's biggest advertising group, WPP, yesterday launched a new company, Xaxis, which will preside over the "world's largest database" of 500 million personal profiles, based on such things as the individual's choice in websites and purchases made online. Xaxis will track "almost 100 per cent of the UK population".