The 46-year-old superstar's fan club made the largest poster in the world in just four months after putting logistics into place.
"It's a matter of honour. I thank everyone who made this possible," Akshay said in a statement. The poster is 58.87 metres wide and 54.94 metres high and was unveiled at Little Gransden Airfield, UK, on October 3, 2013.
Macro Arts (UK) did the manufacturing of the poster, which had also made Jackson's poster.
The official certification for the same was done in the UK itself and the 'Boss' poster also finds a mention on the official Guinness website. The comedy caper, directed by Anthony D'Souza, also stars Mithun Chakraborty, Danny Denzongpa, Aditi Rao Hydari and Parikshit Sahni in pivotal roles. "Boss" is slated to hit theatres on October 16.