Allan Simmons was a finalist in Series 3.
A computer programmer from London, he was the first player ever to win seven shows in a row, just being pipped to the post by eventual octochamp William Bradford. He returned to the finals as #3 seed, but was beaten by Andrew Guy in the quarter-final.
Away from Countdown, Allan has been very heavily involved in the world of Scrabble, having been both chairman of the ABSP and its international equivalent WESPA (The World English-Language Scrabble Players' Association). A full-time Scrabble consultant and one of the UK's most dominant players, he has edited Onwords Magazine (now known as OnBoard) since 1979 and is a five-time British Matchplay Scrabble champion, four-time ABSP Masters winner and the 2008 National Scrabble champion. He has represented Scotland at the World Scrabble Championship on numerous occasions. In 2016 he reached the quarter-final stage of the 2016 MSI World Championship, as well as winning three of the ABSP's five major events in that year.
On 13th November 2017, Simmons was given a three-year ban from competitive Scrabble for cheating, following complaints from Lewis Mackay and other players.  This cost him his role as Saturday Scrabble columnist for The Times, which was eventually taken over by Paul Gallen.
Masters Series 1
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|89||3/10/1983||P||Allan Simmons||41 – 35||Ted Wiles||William Rushton||Yvonne Warburton||64|
|90||4/10/1983||P||Allan Simmons||47 – 37||George France||William Rushton||Yvonne Warburton||70|
|91||5/10/1983||P||Allan Simmons||36 – 36||Alan Walker||William Rushton||Yvonne Warburton||70|
|92||6/10/1983||P||Allan Simmons||61 – 42||Alan Walker||William Rushton||Yvonne Warburton||70|
|93||10/10/1983||P||Allan Simmons||61 – 18||Pat Williams||William Rushton||Yvonne Warburton||73|
|94||11/10/1983||P||Peter Dean||21 – 47||Allan Simmons||William Rushton||Yvonne Warburton||72|
|95||12/10/1983||P||John Rusted||40 – 47||Allan Simmons||William Rushton||Yvonne Warburton||70|
|96||13/10/1983||P||Eric Shaw||19 – 45||Allan Simmons||William Rushton||Yvonne Warburton||73|
|97||17/10/1983||P||Allan Simmons||31 – 38||William Bradford||William Rushton||Yvonne Warburton||72|
|128||8/12/1983||QF||Andrew Guy||62 – 35||Allan Simmons||Ned Sherrin||Julia Swannell||70|
|M43||22/01/1990-26/01/1990||M||Harry Venet||41 – 121||Allan Simmons||none||Freda Thornton||133|
|M80||8/10/1990-12/10/1990||M||Allan Simmons||85 – 44||Steve Williams||none||Mark Nyman||137|
Allan Simmons on Wikipedia.