<Table> <Tr> <Th_colspan="2"> Who Wants to Be a Millionaire? </Th> </Tr> <Tr> <Td_colspan="2"> Titlecard for the 2018, 20th Anniversary series of Who Wants to be a Millionaire </Td> </Tr> <Tr> <Th> Created by </Th> <Td> <Ul> <Li> David Briggs </Li> <Li> Steve Knight </Li> <Li> Mike Whitehill </Li> </Ul> </Td> </Tr> <Tr> <Th> Presented by </Th> <Td> <Ul> <Li> Chris Tarrant </Li> <Li> Jeremy Clarkson </Li> </Ul> </Td> </Tr> <Tr> <Th> Theme music composer </Th> <Td> <Ul> <Li> Keith Strachan </Li> <Li> Matthew Strachan </Li> <Li> Nick Magnus (2007--14) </Li> </Ul> </Td> </Tr> <Tr> <Th> Country of origin </Th> <Td> United Kingdom </Td> </Tr> <Tr> <Th> Original language (s) </Th> <Td> English </Td> </Tr> <Tr> <Th> No. of series </Th> <Td> 31 </Td> </Tr> <Tr> <Th> No. of episodes </Th> <Td> 599 (as of 11 May 2018) </Td> </Tr> <Tr> <Th_colspan="2"> Production </Th> </Tr> <Tr> <Th> Producer (s) </Th> <Td> David Briggs </Td> </Tr> <Tr> <Th> Production location (s) </Th> <Td> <Ul> <Li> Elstree Studios (1998--2014) </Li> <Li> MediaCityUK (2018--present) </Li> </Ul> </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 30--75 minutes </Td> </Tr> <Tr> <Th> Production company (s) </Th> <Td> <Ul> <Li> Celador (1998--2007) </Li> <Li> 2waytraffic (2007--10) </Li> <Li> Victory Television (2011--14) </Li> <Li> Stellify Media (2018--present) </Li> </Ul> </Td> </Tr> <Tr> <Th> Distributor </Th> <Td> Sony Pictures Television </Td> </Tr> <Tr> <Th_colspan="2"> Release </Th> </Tr> <Tr> <Th> Original network </Th> <Td> ITV </Td> </Tr> <Tr> <Th> Picture format </Th> <Td> 4: 3 (1998--99) 16: 9 (1999--2014, 2018--present) </Td> </Tr> <Tr> <Th> Original release </Th> <Td> Original series: 4 September 1998 (1998 - 09 - 04)--11 February 2014 (2014 - 02 - 11) Revived series: 5 May 2018 (2018 - 05 - 05)--Present </Td> </Tr> <Tr> <Th_colspan="2"> External links </Th> </Tr> <Tr> <Td_colspan="2"> Website </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Who Wants to Be a Millionaire? </Th> </Tr>

When was who wants to be a millionaire filmed
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