In this version Radius was played by Patrick Troughton who was later the second actor to play The Doctor in Doctor Who, None of these three productions survive in the BBC's archives.

The new instrument was constructed by Edward Troughton but Maskelyne did not live to see it completed.

In 1969, Pertwee was selected by producer Peter Bryant to take over as the Doctor from Patrick Troughton in the television series Doctor Who.

Patrick George Troughton ( 25 March 1920 – 28 March 1987 ) was an English actor most widely known for his roles in fantasy, science fiction and horror films, particularly in his role as the second incarnation of the Doctor in the long-running British science-fiction television series Doctor Who, which he played from 1966 to 1969, reappearing in 1973, 1983 and 1985.

In 1948, Troughton made his cinema debut with small roles in Olivier's Hamlet, the TCF production " Escape " ( one of the stars of which was William Hartnell ), and a minor role as a pirate in Treasure Island appearing only during the attack on the heroes ' hut.

After he was cast, Troughton considered various ways to approach the role, to differentiate his portrayal from Hartnell's amiable-yet-tetchy patriarch.

Troughton was the first Doctor to have his face appear in the opening titles of the show, and one of six Doctor Who actors to play two roles in the same story when he appeared as Salamander in The Enemy Of The World ( the others being William Hartnell in The Chase and The Massacre of St Bartholomew's Eve, Tom Baker in Meglos, Peter Davison in Arc of Infinity, David Tennant in Journey's End, and Matt Smith in " The Rebel Flesh "/" The Almost People ").

Troughton was popular with both the production team and his co-stars.

Patrick Troughton was succeeded in the role by Jon Pertwee.

On Friday, 27 March 1987, two days after his 67th birthday, Troughton was a guest at the Magnum Opus Con II science fiction convention in Columbus, Georgia, USA.

Although he had been warned by his doctors before leaving the UK not to exert himself because of his heart condition, Troughton appeared to be in good spirits and participated vigorously in the day's panels, and was looking forward to a belated birthday celebration, which was planned for the coming Saturday evening, as well as a screening of the Doctor Who story The Dominators, which Troughton had requested personally, on the Saturday afternoon.

Troughton was married three times and he is survived by his second partner Ethel Margaret ' Bunny ' Troughton.

The species was moved in 1928 by Ellis Le Geyt Troughton, who created the genus Planigale for it and the other then-known species, the common planigale ( P. maculata ), and described the narrow-nosed planigale ( P. tenuirostris ).

In the 1970 BBC miniseries The Six Wives of Henry VIII, the role was played by Patrick Troughton.

In honour of Patrick Troughton the Mill Hill theatre was dedicated to the actor and named the Patrick Troughton Theatre in 2007.

There is a longstanding fan myth that the tape of Episode 1 was erased by mistake, having been confused with an episode of the Patrick Troughton serial The Invasion.

* Patrick Troughton does not appear in Episode 4 as he was on holiday when it was being recorded.

* David Troughton ( born 1950 ), English actor and son of Patrick Troughton

* Jim Troughton ( born 1979 ), English cricketer and grandson of Patrick Troughton

* Michael Troughton ( born 1955 ), English actor and son of Patrick Troughton

* Sam Troughton ( born 1977 ), English actor and grandson of Patrick Troughton

* Sammy Troughton ( born 1964 ), Northern Irish footballer

Troughton was born at Corney, Cumberland.

David Troughton ( born 9 June 1950 ) is an English actor, known for his Shakespearean roles on the British stage and for his many roles on British television, notably that of Dr Bob Buzzard in A Very Peculiar Practice.

David Troughton was born in Hampstead, North London.

He also presented the Doctor Who video releases The Troughton Years ( showcasing selected surviving episodes of missing stories ) and The Pertwee Years ( a lookback at his time on the show, with his three selected episodes ) in the early 1990s.

After his time at the Embassy School of Acting, Troughton won a scholarship to the Leighton Rallius Studios at the John Drew Memorial Theatre on Long Island in New York, U. S ..

( His grandson Sam Troughton played one of Robin's colleagues in the 2006 BBC TV Series of the same name, and Patrick himself would make an appearance on the Adventures of Robin Hood starring Richard Greene.

During his time on the series, Troughton tended to shun publicity and rarely gave interviews.

Troughton also gained a reputation on set as a practical joker.

Troughton returned to Doctor Who three times after he originally left the programme, becoming the only former " Doctor " to reprise the role that many times on television after his original run.

Patrick Troughton ( who had played the Second Doctor and whom Davison had watched on the programme as a teenager ) had recommended to Davison that he leave the role after three years, and Davison followed his advice.

David Dickinson, John Prescott, Robin Cook, Gandalf, David Cameron, Magneto and Ian McKellen, Professor Robert Winston, Dr Rowan Williams, David Blunkett, Tom Paulin, Saddam Hussein, Peter Mandelson, Graham Norton, Martin Jarvis, Trevor McDonald ( on radio ), Bob Geldof, Ken Livingstone, Brian Blessed, Luciano Pavarotti, Monty Don, Richard Briers, Patrick Stewart, Laurence Llewelyn-Bowen, Toby Ziegler, Donald Rumsfeld, Adam Hart-Davis, Hannibal Lecter ( on radio ), Lord Voldemort ( on radio ), Hercule Poirot, Second Doctor & Patrick Troughton, Bernard Matthews, Rocky Balboa, Al Gore, George Lamb

Just four men made it to shore, of whom the medic Charles Troughton died on reaching land.

In 1826, after John's death and in failing health himself, he took on William Simms as a partner and the firm became known as Troughton & Simms.

Troughton & Simms was a British instrument-making firm, formed when Edward Troughton in his old age took on William Simms as a partner in 1826.

In 1965, a radio adaptation starring future Doctor Who star Patrick Troughton was transmitted on BBC radio.

Dicks went on to become the main script editor on the programme the following year, and earned his first writing credit on the show when he and Hulke co-wrote the epic ten-part story The War Games which closed the sixth season and the era of Second Doctor Patrick Troughton.

However, although the new format of the Doctor being stuck on Earth had proved popular enough to save the programme from cancellation, neither Letts nor his script editor Terrance Dicks were particularly keen on the idea, and from the eighth season onwards sought reasons for the Doctor to be able to travel in time and space again, eventually having the Time Lords grant him full freedom at the conclusion of the 1973 tenth anniversary story, The Three Doctors, a serial which also featured guest appearances from Troughton and Hartnell, the latter in a restricted role due to his poor health.

Troughton suffered a third and final heart attack at 7: 25 a. m. the next day ( 28 March 1987 ) just after he had ordered his breakfast from the hotel staff.

* 1920 – Patrick Troughton, English actor ( d. 1987 )

** Patrick Troughton, British actor ( b. 1920 )

* Patrick Troughton ( 1920 — 1987 ), English actor best known for his role in Doctor Who

* Patrick Troughton ( 1920 – 1987 ), an English actor