During the Third Doctor's tenure, producer Barry Letts was adamant that the device not become a cure-all for the series, and limited its use to avoid writers becoming over-reliant on it.

In the DVD commentary, Letts himself cannot recognise the prop but remarks that this serial was produced out of transmission order ; this explains why the sonic screwdriver reverts to its previous appearance for one story before receiving a more permanent refit thereafter.

Exceptions include Robot ( which was the last story to be produced by Barry Letts ), where it was again used to detonate mines, and as a " miniature sonic lance " to cut out a lock.

In early 1974, Pertwee announced he would step down as the Doctor in order to resume his stage career in The Bedwinner, also citing typecasting in the role as the reason for leaving, though later he would say that the catalyst for his departure was the death of his good friend and co-star Roger Delgado and the departures of co-star Katy Manning and producer Barry Letts.

The play was produced by Brian Lighthill and written by Barry Letts.

* Don Letts, film director and musician, born in 1956, was educated in Kennington.

His debut was filmed by Don Letts and appears in Punk Rock Movie.

He was recommended to producer Barry Letts by the BBC's Head of Serials, Bill Slater, who had directed Baker in Play of the Month.

Impressed by Baker upon meeting him, Letts was convinced he was right for the part after seeing his performance in The Golden Voyage of Sinbad.

The Punk Rock Movie was assembled from Super 8 camera footage shot by Don Letts, the disc jockey at The Roxy club during the early days of the UK punk rock movement, principally during the 100 days in 1977 in which punk acts were featured at The Roxy club in London.

Roxy club disc jockey Don Letts was given a Super 8 camera as a present by fashion editor Caroline Baker.

When Letts started to film the acts at The Roxy, it was soon reported that he was making a movie, so Letts determined to film continuously for three months.

The media reaction to the advertisement was equally effusive ; The Independents Peter York described it as creating " the water-cooler ad conversation of the year ", while Quentin Letts of The Daily Telegraph believed it was " certain to become an advertising legend ".

* Dave Vanian ( born 1956 )( real name David Letts ), the lead singer of The Damned, was born and lived in Chaulden.

It was built by architect Arthur R. Kelly in 1927 for Arthur Letts, Jr., son of The Broadway Department Store founder Arthur Letts and acquired by Playboy from Louis D. Statham ( 1908 – 1983 ), an engineer, inventor and chess aficionado, in 1971 for $ US1. 1 million ($ US5. 5 million in 2007 dollars ).

Simon Raven's Sexton Blake and the Demon God was a six-part television serial produced by Barry Letts for the BBC in 1978.

It was directed by Rodney Bennett and produced by Barry Letts.

His Glaswegian accent led to his being nicknamed " Gorbals Mick " by Quentin Letts, after the working-class district of Glasgow, although he was actually born on the other side of the river from the Gorbals and represented a constituency a few miles away.

Thereafter, he moved on to work on the series Paul Temple, and was replaced by director Barry Letts after another regular director on the show, Douglas Camfield, had turned down the job.

It oversaw the Northern Territory under Country Liberal Party Majority Leader Dr Goff Letts from November 1974 to August 1975, when Letts replaced Paul Everingham with then-Speaker Bernie Kilgariff.

As Nathan-Turner was a new producer and a restructure of the Drama Department meant that MacDonald would not be able to offer the direct support that had been available to previous producers, the latter appointed Barry Letts to return to the series as Executive Producer and oversee Nathan-Turner's initial season working on the series.

For Nathan-Turner's first season in charge of the show, former Doctor Who producer Barry Letts was asked to return in the role of Executive Producer, and acted as an advisor for Nathan-Turner in this period.

After Nathan-Turner's first season in charge, both Bidmead and Letts left the series.

During the early 1980s he worked again as script editor to Barry Letts ' producer, this time on the BBC's esteemed Sunday Classics strand of period dramas and literary adaptations.

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.

Letts had, in fact, been offering unofficial advice and comment to Graham Williams for some time beforehand.

Nathan-Turner also received criticism, including from former series producer Barry Letts, for introducing question marks to the Doctor's costume during his time as producer of the series.

Her role is to allocate roughly 1 day per week parliamentary debating time between competing backbenchers by a a processed described by Quentin Letts as akin to Dragons ' Den.

Opposition Leader Denis Burke's loss of his own seat of Brennan was only the second time a party leader in the Territory had been defeated in their own electorate, after former Majority Leader Goff Letts losing his seat of Victoria River in 1977.

Hannam had previously directed such series as Colditz and Paul Temple while Barry had worked extensively on Doctor Who, having directed some 31 episodes at the time, including the stories The Dæmons and The Mutants for Letts and Dicks, as well as episodes of Out of the Unknown, Paul Temple and The Onedin Line.

The score was unusual and controversial for Doctor Who at the time, with producer Barry Letts insisting that substantial edits were made for the finished programme.

* Writer Barry Letts was a long time writer, director and producer for Doctor Who, particularly during Jon Pertwee's years.

Letts went to Jamaica for the first time when, after the Sex Pistols broke up, Johnny Rotten decided to escape the media frenzy by going with Richard Branson to Jamaica.

Dicks went on to form a highly productive working relationship with incoming Doctor Who producer Barry Letts, working as the script editor on each of Letts ' five seasons in charge of the programme from 1970 to 1974.

Whitley first intended the town be named " Otis ", after Harrison Gray Otis of the Los Angeles Times, and streets as Otis, Sherman, Letts ( the Broadway store ) and Ross ( after his son, Ross Whitley ) show the connections.

Reviewing a preview of the show at London's Gielgud Theatre, Daily Mail critic Quentin Letts described Hall's acting as " wooden as a toothpick " and the performance as " Two fried eggs in the gloaming ".

With actress Katy Manning also having departed from her role as companion Jo Grant after three seasons, and Letts and Dicks both planning to move on, Pertwee felt that his " family " on the show was breaking up, and he decided to leave at the conclusion of the eleventh season in 1974.

As of 1 April 2009, Letts is presenting a weekly show on BBC Radio 6 Music.

Dorries maintains a high profile in the media, where she has been derided as ' Mad Nad ', while a defender, journalist Quentin Letts, has accused other MPs of feeling " envy " for her flamboyance and publicity skills.

It came into existence after the bizarre events of the 1977 election ; while the Country Liberal Party government was easily re-elected, five of its seven executive members, including its leader, Dr Goff Letts, lost their seats.

* Bug ( 2006 film ), an adaptation of the Tracy Letts play, directed by William Friedkin

* Bug ( play ), by Tracy Letts

A brief clip of Devoto-era Buzzcocks performing The Troggs ' " I Can't Control Myself " appears in the Punk: Attitude documentary directed by Don Letts.

The screenplay, written by Lowell Ganz, is based on the best-selling novel by Billie Letts.

* 1986, directed by Barry Letts, shown on BBC 1986 / 87

In 2009, he starred in the Chicago-based Steppenwolf Theatre Company's production of Superior Donuts, by Pulitzer Prize award-winning playwright Tracy Letts.

* 2008: August: Osage County by Tracy Letts

is a 2010 British documentary film directed by Alan G. Parker that includes interviews from those associated with Vicious and Spungen, including Glen Matlock, Don Letts, John Holmstrom, and Howie Pyro, among others.

* The Enemy of the World ( with uncredited rewrites by Barry Letts and Derrick Sherwin )

Billed in the credits as " Street Scum ," they are played by Mick Jones, Joe Strummer, and Paul Simonon of The Clash, actress-singer Ellen Foley (" Paradise by the Dashboard Light ," Night Court ), Don Letts, Kosmo Vinyl, and singer Pearl Harbor.