The 'Warzone' singers sprung into action after a girl fainted at the sight of them and banged her head on a brick wall following their T in the Park performance this weekend.
Sykes ordered the band's bus to stop and put the fan into the recovery position, while Parker called emergency services, according to The Sun.
"It was as we pulled up at the airport that one of our fans collapsed on the floor," Parker explained. "Nath stayed by her side while I called 999.
"It was pretty frightening, but anyone would have done the same."
The Wanted recently stated that they are open to collaborating with rival boyband One Direction for charity.
The band has come under fire in recent times though for branding Christina Aguilera as "a total bitch" and refusing to apologise.
Photo gallery - T in the Park 2012:
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