Most of the animated graphics of Daley are sourced by digitizing video of Daley himself from promotional material supplied by his management team, and then massaging that into usable graphics. It proved difficult to get usable angles for some of these graphics, e.g. the angle changed through the panning motion of some running events like the 100M running & hurdles; if you look closely you may be able to detect this slight perspective changes in some animations.
Finally, the 'training' sessions are digitised from video shot NOT of Daley but of one of my friends!
His management team wouldn't / couldn't supply suitable material, so off we popped down to the local gym, camera in hand... And yes -- we darkened his face with boot polish, and then carefully edited a mustache onto the captured material!