Question: Which publishing house was founded by a man who was also an environment secretary?

Context paragraphs:
Military Medical Business: Military Medical Business (Военно Санитарное Дело) was one of the professional medical journals of the Worker's and Peasant's Red Army (RKKA).  The journal was published monthly in Moscow.  Between 1938-1940, each issue cost 1 ruble and 50 kopecks.  A 12-month subscription to the journal for the year 1939 cost 18 rubles.  The Moscow publishing house published a total of 33 different professional medical journals for the RKKA in the year 1939.  The Leningrad publishing house published five different journals that same year.  Four different serials were also published by the Moscow publishing house under the title "Central Medical Abstract Journal".  By the end of 1940, the price of a single issue of "Military Medical Business" had increased to 2 rubles.  The Moscow publishing house advertised 33 different journals, the Leningrad publishing house advertised 5 journals, and the Kazan publishing house advertised 1 journal for the year 1941.  A 12-month subscription to "Military Medical Business" cost 30 rubles in 1941.  The Moscow publishing house also advertised four serials under the title "Central Medical Abstract Journal" for the year 1941.

Silesian National Publishing House: Silesian National Publishing House (Silesian: "Ślōnsko Nacyjno Ôficyno" ) is the first-ever publishing house specializing in producing books in the Silesian language and on all matters (Upper) Silesian.  It was founded in 2003 in Zabrze, Poland, where it is registered under the Polish name, Narodowa Oficyna Śląska.  Its owner and founder, Andrzej Roczniok was the initiator of to the codification of the Silesian language, and remains the main contributor to this process.  He also applied for an ISO 639-3 code for Silesian, which was granted as szl in 2007.  In the same year the Ślōnsko Nacyjno Ôficyno began publishing the first-ever periodical in Silesian and Polish, "Ślůnsko Nacyjo" (Silesian Nation).  The publishing house’s bestseller has been Dariusz Jerczyński’s extensive monograph, "Historia Narodu Śląskiego" (A History of the Silesian Nation, 2003), which actually commenced the publishing activities of the Ślōnsko Nacyjno Ôficyno.

Vietnamese Prodigy: Vietnamese prodigy (Vietnamese : "Thần đồng đất Việt") is a comic series of Vietnam, the first volume called 'Shaman calls grapefruit' published by Tre Publishing House in February 16, 2002.  Initially the work was carried out by Le Linh and Phan Thi company.  After writing the story for a while, Le Linh stopped writing this comic, and now writing stories as well as related work are in charge by Phan Thi company.  The series previously published by Tre Publishing House, followed Van Hoa Sai Gon Publishing House, Thoi Dai Publishing House(from episode 130 to episode 153), Dai Hoc Su Pham Ho Chi Minh City Publishing House (from episode 154 to episode of 168) and now the Dan Tri Publishing House (from episode 169 onwards).  With over 100 novels, along with related comic Vietnamese Science prodigy, Vietnamese Fine Arts Prodigy and the Vietnam Mathematics prodigy, Vietnamese Prodigy Hoang Sa-Truong Sa, which is considered the Vietnam comics longest and most successful until the present time.  Average one volume per month of Vietnamese Prodigy (printed in black and white) and three new color comics related Vietnamese Prodigy (including Science, Mathematics and Fine Arts) was released.

Dtv Verlagsgesellschaft: The dtv Verlagsgesellschaft (dtv) is a German publishing house headquartered in Munich.  It was founded in 1960 by eleven publishers as a common paperback publishing house named "Deutscher Taschenbuch Verlag" (German paperback publishing house).

National Garden Festival: The National Garden Festivals were part of the cultural regeneration of large areas of derelict land in Britain's industrial districts during the 1980s and early 1990s.  Five were held in total - one every two years, each in a different town or city - after the idea was pushed by the Conservative environment secretary Michael Heseltine in 1980.  They were based on the German post-war Bundesgartenschau concept for reclaiming large areas of derelict land in cities, and cost from £25-million to £70 million each.  They reclaimed the contaminated ex-sites of large industrial concerns such as steelworks.

Onufri Publishing House: Onufri Publishing House is an independent Albanian publishing house with its center in Tirana, Albania and a branch office in Pristina.  It was founded in 1992 and is regarded as of the leading publishers of classics and scholarly works in Albanian.  It also publishes works by foreign authors and scholars in Italian and English.  In Albanian the publishing house is known as Shtëpia Botuese Onufri or Onufri Botime (named after the 16th century painter Onufri).  The publishing house's founder and current CEO is Bujar Hudhri.

Peter Walker, Baron Walker of Worcester: Peter Edward Walker, Baron Walker of Worcester, (25 March 1932 – 23 June 2010) was a British politician.  A member of the Conservative Party, he served in the Cabinet as the Environment Secretary (1970–72), Trade and Industry Secretary (1972–74), Agriculture Minister (1979–83), Energy Secretary (1983–87) and Welsh Secretary (1987–90).  He was a Member of Parliament (MP) representing the constituency of Worcester from 1961 to 1992.  He was made a life peer in 1992.

Michael Heseltine: Michael Ray Dibdin Heseltine, Baron Heseltine, {'1': ", '2': ", '3': ", '4': "} (born 21 March 1933) is a British Conservative politician and businessman.  After initially making money as a property developer, he was one of the founders of the publishing house Haymarket.  He was a Member of Parliament from 1966 to 2001, and was a prominent figure in the governments of Margaret Thatcher and John Major including serving as Deputy Prime Minister under the latter.

Concordia Publishing House: Concordia Publishing House (CPH), founded in 1869, is the official publishing arm of the Lutheran Church–Missouri Synod.  Headquartered in St Louis, Missouri at 3558 S. Jefferson, CPH publishes the Synod's official magazine, "The Lutheran Witness" and the Synod's hymnals, including "The Lutheran Hymnal" (1941), "Lutheran Worship" (1982), and "Lutheran Service Book" (2006).  It has published a comprehensive edition of Johann Sebastian Bach's "Orgelbüchlein," complete with short analyses of each chorale.  It publishes a wide range of resources for churches, schools, and homes and is the publisher of the world's most widely circulated daily devotional resource, "Portals of Prayer".  Their children's books, known as Arch Books, have been published in millions of copies.  Over 850,000 copies of this resource are printed and distributed quarterly.  Concordia Publishing House is the oldest publishing company west of the Mississippi River and the world's largest distinctly Lutheran publishing house.

Gyldendal: Gyldendalske Boghandel, Nordisk Forlag A/S, usually referred to simply as Gyldendal (] ; Nasdaq: GYLD A , ) is a Danish publishing house.  Founded in 1770 by Søren Gyldendal, it is the oldest and largest publishing house in Denmark, offering a wide selection of books including fiction, non-fiction and dictionaries.  Prior to 1925, it was also the leading publishing house in Norway, and it published all of Henrik Ibsen's works.  In 1925, a Norwegian publishing house named Gyldendal Norsk Forlag ("Gyldendal Norwegian Publishing House") was founded, having bought rights to Norwegian authors from Gyldendal.

Supporting paragraphs: National Garden Festival Michael Heseltine
Answer: Haymarket