From iGaming Business The UK’s Advertising Standards Authority has banned an advert for online gambling operator 888 Holdings that featured images of comic book superhero Spider-Man. The regulator upheld a complaint that the online advert, which was presented in a comic book style format and included a reference to ‘The Amazing Spider-Man’, could appeal to those who are under the legal age to gamble. “The ASA understood members had to confirm they were aged 18 or over before they could register to play the game,” the regulator said. “However, we noted the ad appeared on the website, which was accessible…