Aviva's You Are The Big Picture global campaign will see members of the public able to have their photo projected onto landmark buildings around the world including the National Theatre on the South Bank.
On Monday Patric Shaw will be snapping 100 Londoners on the South Bank.
The lucky recipients will get to keep a copy of their photo before seeing it projected onto the National Theatre during the week.
On Friday 22 and Saturday 23 people can pop down to the South Bank and have their photos taken by roving photographers and projected onto the National Theatre during the same evening.
Over the two days 13,602 photos will be projected onto the National Theatre alone with a grand total of 78,672 globally.
Related website: www.youarethebigpicture.com