Spanish GP: Thursday's build-up in pictures

The Formula 1 community is back in Europe, and Spain is historically the rallying point for the first round on the continent.

Barcelona, a venue everyone knows like the back of their hand, is within trucking distance of everyone's base so it's the logical race where significant upgrades are introduced, as well the team's motorhomes.

Here are our pictures from Thursday's build-up at the Circuit de Catalunya.