The crowdsourced ads, created by Leo Burnett, have been made by splicing clips of fans watching the Games over the past week, supported by digital outdoor ads featuring pictures that Olympics fans have posted of themselves onto a dedicated Facebook page.
The first of the reactive TV ads launched on Saturday (4 August), with another creative already being filmed to air next Saturday (11 August). The campaign originally launched on 25 June.
The bespoke user-generated posters are being created on a daily basis, with 58 already created for regular rotation on the digital outdoor sign at London's Piccadilly Circus over the past week.
Leo Burnett said additional outdoor, press and Facebook ads bring the total of user-generated ads to over 100, with more than 1,000 fans having uploaded personal images.
McDonald's is the official restaurant provider to the London 2012 Olympic Games and the ad ends with the strapline: "We're all making the Games".
Mark Franklin and Rob Tenconi acted as both copywriters and art directors on the ads, with creative director Adam Tucker, and planners Tom Roach and Kit Patrick. Luke Franklin and Neil Gorringe directed the ad, while production company Moxie Pictures worked with the agency. Media planning and buying is handled by OMD UK.
Alistair Macrow, vice-president marketing, McDonald's UK said: "Putting user-generated content front and centre of our Olympic advertising has really enlivened the campaign, and has given the British public the chance to lead the way in celebrating this monumental summer of sport.
"The levels of engagement are exceeding our expectations and we're being sent some amazing shots that are really capturing the charming eccentricities of fans enjoying the Games. It's just a terrific reflection of the excitement that is sweeping the nation."Follow @loullamae_es