World Travel Market is this year celebrating its 30th event and was first opened its doors back in 1980 when Margret Thatcher was Prime Minister and Blondie, Abba and David Bowie were all topping the music charts.

More than 21 million UK and a massive 83 million US viewers tuned in to US TV soap Dallas to find out who shot JR.

The news in 1980 was dominated by the election of former actor Ronald Reagan US President and the assassination of Beatles legend John Lennon by Mark David Chapman.

Also in 1980, the world's best selling toy the Rubik's Cube hit the international games shelves selling more than 390 million over the past 30 years.

The Post-It Note became the must have office accessory, while the world discovered the identity of Luke Skywalker's father with the film release of The Empire Strikes Back.

Below are 30 facts (some serious, some interesting and some quirky) you may or may not know about the 30 years of WTM.

30 WTM Facts

1. WTM almost did not take place at all. The critics told launch Exhibition Director Frank Boiteux WTM wouldn't work, which led Bryan Hope – the man behind the WTM concept – to question his own sanity. Bryan and Frank were determined to prove the doubters wrong.

2. Their determination and commitment to the WTM cause was almost defeated before the event launched by a contractors' strike days before the opening. Stage builders walked out over American exhibitors employing their own contractors.

3. World Travel Market has been hosted in three London venues, Olympia, Earl's Court and ExCeL - London. WTM launched at Olympia in 1980 before moving to the larger Earl's Court in 1992. The premier global event for the travel industry grew so popular it moved to London's largest exhibition centre ExCeL, London in 2002.

4. WTM has been opened by six royals, four British Government Ministers, seven industry figures, four explorers, an opera singer, two London Mayors and a Miss World.

5. The 1980 launch event was opened by both the Duke of Kent and Miss World, who was Kimberly Santos of Guam. A royal returned to WTM in 1989, with Princess Anne helping WTM to celebrate its 10th anniversary.

6. In 1985 security was increased with the opening ceremony a standing room only affair as a record number of visitors watched Princess Diana open the event.

7. WTM has played host to a variety of animals over the past 29 years. Most famously, a West Indian exhibitor attracted a lot of attention by bringing a parrot to its stand. The parrot slipped its chain and flew off into the roof at Olympia. Despite elaborate attempts to catch the bird it seemed an impossible task. The parrot finally returned later in the day of its own accord.

8. A regular to WTM during the 80s was an armadillo, brought by the Texas delegation. The reptile lived in quarantine in London Zoo prior to its annual appearances at WTM. A crow, an elephant and a white horse are just some of the animals which have also attended WTM over the past three decades.

9. One celebrity animal who nearly attended WTM was Grand National winning horse Red Rum, who was booked by an exhibitor in 1982. However, the Hall Manager, a stickler for regulations, insisted an armed vet was on standby to shoot the national treasure in the case of a fire alarm!

10. WTM has played host to an array of celebrities over the past three decades. Celebrity WTM visitors have included film star Michael Douglas, entrepreneur Sir Richard Branson, England football Manager Sven-Goran Eriksson, five-times Olympic gold medallist Sir Steve Redgrave and most recently Aussie soap star, singer and TV talent show judge Dannii Minogue.

11. Over the last 29 years WTM has held almost 11,000 (10,950) conference sessions. UK travel agents can collect Accredited Travel Professional (ATP) points for each WTM Travel Agents Programme session they attend.

12. Entertainment has always been at the forefront of WTM, bringing vibrancy and razzmatazz to the show floor. West End and Broadway composer Sir Andrew Lloyd Webber tested a scene from one of his musicals at WTM, while River Dance has made several appearances.

13. The move to Earl's Court in 1992 saw the launch of the Meridian Club. The Meridian Club is for the industry's senior buyers, who use WTM to negotiate deals with the exhibitors. Meridian Club launched with almost 7,000 (6,907) members, in 2008 it had almost 11,000 (10,981).

14. Environmental Awareness Day, launched in 1994, was renamed World Responsible Tourism Day (WRTD) in 2004. WRTD, the only global day of action of its kind, is supported by the UNWTO and leading industry associations. The day is vital – for business, for profitability and for our planet. It means taking care of a world that we seek to promote, preserving our heritage and cultures and taking into account the views and needs of local communities.

15. The first WTM at Earl's Court saw the Boat Show's pool utilised as a Venice gondolier. Marilyn Monroe and Laurel and Hardy and other Hollywood look-alikes could all be spotted taking a leisurely ride on the water during World Travel Market.

16. During the last seven years of WTM more than 180,000 glasses of champagne have been toasted in celebration, 9,030 bottles of house wine and 875,000 cups of coffee have been drunk.

17. In 2008, more than 550 catering staff worked at ExCeL - London to keep WTM's exhibitors, visitors, international media and ministers refreshed with more than 37,000 canapés and more than 125,000 cups of coffee.

18. WTM is run by a skilled exhibition event team comprising of more than 30 staff working all year to deliver the premier global event for the travel industry.

19. The total combined exhibiting floor space over the past 29 years of WTM at Olympia, Earl's Court and ExCeL, London totals more than 1.3 million square metres (1,311,290 m2). That's the equivalent of 325 football pitches!

20. A delegate visiting WTM for the four full days can expect to walk more than 100,000 steps.

21. In 2008, one delegate walked an astounding 120,000 steps - that's a whooping 60 miles burning almost 1,600 calories.

22. World Travel Market has played host to almost half a million (493,000) exhibitors over the past 29 years, with 198 countries and regions represented.

23. Last year WTM smashed its participant record with almost 50,000 (49,963) exhibitors, visitors, international media attending the event – an increase of 4% on 2007.

24. WTM has the largest reoccurring Press Centre in the UK. Beaten only by the largest one-off press centre in the UK, which was the Commonwealth Games in Manchester 2002.

25. In 2008, WTM updated its admission policy to make the Monday of the event an invite-only day for exhibitors' key contacts and buyers, international media and government tourist ministers.

26. WTM stalwart and chairman Fiona Jeffery joined the premier global event for the travel industry in 1986. Rising through the ranks to Marketing Director in 1991, before becoming Exhibition Director in 1993, Managing Director in 2005 and Chairman in 2008.

27. In 1998, Jeffery founded international water-aid charity Just A Drop. The charity raises desperately needed funds to build wells, bore holes, hand pumps and run health and sanitation programmes throughout the world. Just a Drop has raised more than ï¿¡1million and supported 900,000 people in 28 countries around the world.

28. WTM welcomes performers from all corners of the globe to descend upon WTM to showcase their countries origins and traditions. Bizarre requests include two people dressing up as mosquitoes and a ‘naked' Lady Godiva riding a white horse.

29. WTM has worked with the United Nations World Tourism Organisation (UNWTO) for the past three years to produce the Ministers' Summit at WTM. Last year the top-level gathering brought together the largest number of tourism Ministers anywhere in the world. Fiona Jeffery, Chairman of WTM explains: "The outcome of these summit discussions will penetrate government thinking and policy for the tourism industry in years to come."  

30. Almost one million (972,101) participants have passed through the doors of WTM over the past 29 years.