Daleks - the most famous and evil foes of Doctor Who - were outside the Houses of Parliament and even crossed Westminster Bridge earlier today after invading Britain's capital.

But there's really no need to panic as the Dalek "invasion" was a re-staging of a famous scene from a 1964 episode of Doctor Who.

Four generations of Daleks, showing how the creatures have evolved over the years, were wielding their power on the deserted Westminster Bridge near Parliament.

The Daleks are currently being rested and will not be appearing in the current series of Doctor Who. The current series is in two parts with the second half of it returning in the autumn.

But if you would like to see some Daleks various models are currently on display at The Doctor Who Experience exhibition which is being staged at London's Olympia until November.

Doctor Who, the world's longest-running and most successful TV sci-fi series, celebrates its 50th birthday in 2013.

Replicate! Replicate! Daleks return to London to stage famous scene from 1964 series

By Daily Mail Reporter
13th July 2011
Daily Mail

The Daleks appear to have fallen through a crack in the space-time continuum - trundling past Parliament almost half a century after viewers first saw them conquer the Earth.

The evil beings were wheeled out to re-stage a famous scene from the 1964 Doctor Who adventure on London's Westminster Bridge this morning.

Capital calling: The Dalek Invasion of Earth is recreated on Westminster Bridge to commemorate the original from the 1964 (below) when they first descended on London

Four generations of Daleks - showing how the creatures had evolved over the years - were wielding their power on the deserted road.

Show boss Steven Moffatt said recently that the Daleks were being rested from the BBC1 sci-fi drama, but the various models are currently on display at The Doctor Who Experience exhibition which is being staged at London's Olympia until November.

Foursome: The commemoration of the 1964 scene used four generations of Daleks from the sci-fi series

The original images of the Daleks taking over London - in a story with original Doctor William Hartnell - were screened by the BBC in 1964.

William Hartnell from the original 1964 series and Matt Smith (right), the eleventh incarnation of the Doctor

Today's invasion took place 153 years before the TV version is even due to occur as the original programme was set in the year 2164.

The Daleks

Daleks are cyborgs from the planet Skaro, created by the scientist Davros during the final years of a thousand-year war against the Thals. They are genetically engineered Kaled mutants integrated within a tank-like or robot-like mechanical shell. The resulting creatures are a powerful race bent on universal conquest and domination, utterly without pity, compassion or remorse.

The Daleks are the greatest enemies of the the Time Lord known as the Doctor. Their famous catchphrase is "Exterminate!", with each syllable individually synthesised in a frantic (and quite scary) electronic voice.

The Daleks' planet, Skaro, is a planet of roughly the same mass and dimensions as Earth, and the twelfth planet from its sun. It has a single continent that is divided into east and west halves of almost equal size. Skaro is a nuclear wasteland, whose principal features are a petrified forest, the endless highly acidic rain, a lake containing the results of Davros' early experiments, and the Dalek city, Kaalann.

Before the Daleks arose, Skaro wass the home of a humanoid species with two races, the Kaleds (or Dals) and the Thals. The races went to war with each other, and the mutations caused by the nuclear, chemical, and biological weapons used are soon seen by Kaled scientists as being the end of their species in its (ideologically defined) "pure" form. The Kaled chief scientist Davros accelerated their mutations and placed the now mutated Kaleds in tank-like "Mark 3 travel machines". These cyborgs then become the dreaded Daleks (an anagram of Kaleds).

The Daleks eventually drove the Thals from Skaro and rule a devastated planet, its seas dead and its surface devoid of almost all life.

However, Skaro is rich in minerals which the Daleks use to build massive armies to conquer and destroy other worlds, building the interstellar Dalek Empire. Some time afterward, the Daleks abandon Skaro, which is later reoccupied by the Imperial Dalek faction, apparently at the behest of Davros.

Dr Who Daleks return to London to stage famous 1964 scene | Mail Online
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