Question: The comedian described by The British Theatre Guide as "one of the leading hidden masters of modern British comedy" appeared on which television show?

Context articles: Doreen Valiente Foundation
Richard Herring
Ingram Collection of Modern British Art
British Comedy Guide
Anna Madeley
The British Theatre Guide
Lee and Herring
John Goodwin (theatre publicist)
Rosemary Squire
Sketchorama

Doreen Valiente is considered one of the founders of the modern “Wicca” movement along with Gerald Gardner, the man credited with reviving what has been described as Britain’s only indigenous religion, England being the birthplace of Wicca.
 She was also an author of great note in the field of magic, folklore, witchcraft and paganism and has been described by Professor Ronald Hutton of the University of Bristol as “.
.
 the greatest single female figure in the modern British history of witchcraft”.
 Doreen was also one of the founders of the organisation now called the Pagan Federation, which, more than 40 years on, continues to represent modern day pagans in mainstream society in areas such as law, government, hospitals, schools and the wider community.
 She has an entry in the "Oxford Dictionary of National Biography", was the author of books, which continue to sell today, and are frequently quoted as standard works in the study of contemporary paganism and modern British witchcraft.
 Both Doreen Valiente (Brighton) and Gerald Gardner (Highcliffe) have Heritage Blue Plaques commemorating the buildings where they lived.
Richard Keith Herring (born 12 July 1967) is an English stand-up comedian, comedy writer, podcaster and diarist whose early work includes the comedy double act Lee and Herring.
 He is described by "The British Theatre Guide" as "one of the leading hidden masters of modern British comedy".
The "Ingram Collection of Modern British Art" is one of the United Kingdom’s best and most significant collections of Modern British Art.
 It is recognised as the biggest privately owned publicly accessible collection of Modern British in the country.
 The collection has been put together over the last decade by media entrepreneur Chris Ingram.
 Ingram has been described as “one of the most active and thoughtful collectors of Modern British Art today.”
British Comedy Guide or BCG (formerly the British Sitcom Guide or BSG) is a British website covering all forms of British comedy, across all media.
 At the time of writing, BCG has published guides to more than 7,000 individual British comedies - primarily TV and radio situation comedy, sketch shows, comedy dramas, satire, variety and panel games.
 Other notable features on BCG include a news section, a message board, interviews with comedians and actors, a series of comment and opinion articles, a searchable merchandise database, and a section offering advice to aspiring comedy writers.
 The website also runs "The Comedy.co.uk Awards" and hosts several podcast series, some of which have won awards.
Anna Madeley (born 8 March 1976) is an English actress.
 She has been described by the British Theatre Guide's Philip Fisher as one of the United Kingdom's "brightest and most versatile young actresses".
The British Theatre Guide is a UK-centred website of theatre reviews, news reports, interviews and obituaries.
 It also reviews opera and dance, as well as books, audio recordings and DVDs.
Lee and Herring were a British standup comedy double act consisting of the comedians Stewart Lee and Richard Herring.
 They were most famous for their work on television, most notably "Fist of Fun" and "This Morning with Richard Not Judy" but had been working together on stage and on radio since the late 1980s.
John Goodwin is a British theatre publicist, writer and editor who played a crucial role in the development of subsidised theatre in post-war Britain; first with the Royal Shakespeare Company where in the 60s he led the media campaign against concerted attempts to close its flourishing London base; then with the Royal National Theatre where, as an associate director and member of its planning committee, he was a key figure in the administrative team which, in the '70s and '80s, shaped its historic first years on London's South Bank.
 He is the author of a number of books on the theatre including the best-selling "A Short Guide to Shakspeare's Plays" (Heinemann Education, 1979).
 He also edited and compiled the classic reference work "British Theatre Design" (Weidenfeld & Nicholson, 1990) and edited the internationally best-selling diaries of Sir Peter Hall (Hamish Hamilton, 1983).
Rosemary Anne Squire OBE (born 27 May 1956) is a prolific and broad-based commercial theatre producer.
 She is a founder, co-owner and joint chief executive of The Ambassador Theatre Group Ltd (ATG), whose subsidiary companies include Sonia Friedman Productions (SFP) and First Family Entertainment (FFE).
 Squire's responsibilities include the company's core business and new projects team.
 Widely recognised in the entertainment industry, Squire and Panter are always highly ranked in The Stage 100 – the industry’s newspaper annual guide to the 100 most influential people in UK Theatre.
 From 2010 to 2016, Squire and Howard Panter have topped The Stage 100 a record-breaking seven times consecutively.
 It firmly establishes Squire as the most prominent woman in British theatre of the modern era and makes the couple the most successful entrants ever on the list.
 In February 2013 she was assessed as the 16th most powerful woman in the United Kingdom by Woman's Hour on BBC Radio 4.
 In 2014, Squire was named EY Entrepreneur of the Year, becoming the first woman to ever win the top UK award.
 In 2015 chair of the “Raise the Curtain” Development Board at Nottingham Girls High School, alongside Patron, Dame Stella Rimington.
 Squire was central to securing a £7.5 pledge from the Girls’ Day School Trust which will be used to build a performing arts centre (The SPACe).
 Squire is also leading a fundraising programme, The Donor Tree, to raise an additional £1.5m to fund the building project.
Sketchorama is a radio show, a product of The Comedy Unit, commissioned by the BBC for Radio 4.
 It features a rotating cast of comedic sketch groups who perform in front of a live audience.
 The groups are introduced by a host comedian, originally Humphrey Ker, now Thom Tuck.
 The show is currently in its third season.
 The British Comedy Guide describes it as "a format for Radio 4 which offers the same popular showcase dynamic as stand-up shows, but purely for comedy sketch groups.
 Sketchorama aims to bring hidden gems and established live acts to the airwaves offering a truly distinctive and ambitious show."