Surrey's Kevin Pietersen leaves the field at the end of day three, 234 not out against Lancashire.

Surrey's Kevin Pietersen batting against Lancashire.

Surrey's Kevin Pietersen (left) and Zander de Bruyn (right) made a century partnership against Lancashire.

Surrey's Kevin Pietersen in action against Lancashire.

Surrey's Kevin Pietersen (left) walks off the field at the tea interval with Steven Davies (right) with an unbeaten century against Lancashire.

Surrey's Kevin Pietersen batting against Lancashire.

Surrey's Zander de Bruyn in action against Lancashire.

Surrey's Kevin Pietersen batting against Lancashire.

Surrey's Kevin Pietersen reaches his century against Lancashire.

Surrey's Kevin Pietersen ended day three on 234 not out against Lancashire.

Surrey's Kevin Pietersen (left) walks off the field at the tea break with an unbeaten century against Lancashire.

Surrey's Kevin Pietersen (left) walks off the field at the tea break with an unbeaten century against Lancashire.

Surrey's Murali Kartik fields on the boundary against Lancashire.

Surrey's team and coaching staff applaud Kevin Pietersen off the field after finishing the day 234 not out against Lancashire.

Surrey's Zander de Bruyn in batting action against Lancashire.

Surrey's Zander de Bruyn in batting action against Lancashire.