Marc Jackson (born 1975), American former professional basketball player
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Mark "Jacko" Jackson (born 1959), Australian rules footballer and actor
Michael Jackson | Mark Twain | Andrew Jackson | Peter Jackson | Mark | Janet Jackson | Jackson | Jackson Pollock | Jackson, Mississippi | Mark Wahlberg | Samuel L. Jackson | Port Jackson | Jackson Browne | Stonewall Jackson | Mark Knopfler | Jesse Jackson | Mark Zuckerberg | Mark Rothko | Mark Antony | Alan Jackson | Mark the Evangelist | Gospel of Mark | The Jackson 5 | Glenda Jackson | Reggie Jackson | Mark Ronson | Jackson County | Mark Spitz | Bo Jackson | Mark Foley |
Notable spellers apart from Gayathri included Nisha Abraham-Thomas from Wolverhampton, Mark Jackson from Cambridge, Dominic Harvey from Bath, Sarah Williams from Penzance, Jack Jarvis from Chesterfield and Anthony Collins from Barnes and Pierre Deschamps, who remarkably made the regional heat despite being from France and speaking English as a second language.