Lars Boom leads Tour of Britain after winning stage five time trial

Dutch rider Lars Boom claimed the green leader's jersey after winning the 5th stage of the Tour of Britain. KT/Tim De Waele/Corbis via Getty Images

It was all change at the top of the Tour of Britain after the stage five time trial, with Lars Boom claiming victory to become the overall leader.

Lotto NL-Jumbo rider Boom completed the 16km route around Clacton-on-Sea in 19 minutes two seconds to claim the green jersey from Team Sky's Elia Viviani.

Lotto also took second place in the time trial as Belgian Victor Campenaerts finished six seconds behind his Dutch teammate.

With just three stages remaining, Boom is now first in the overall rankings, eight seconds quicker than Campenaerts and nine seconds ahead of Team Sky's Vasil Kiryienka.

Kiryienka's teammate Geraint Thomas is the highest ranked Briton after he finished eighth on the stage to move to ninth position overall, just one spot ahead of Englishman Alex Dowsett [Movistar].

"I'm really happy," said Boom, who won the Tour of Britain in 2011. "We have to see if I can hang on to the jersey.

"The focus now is to win the GC in Cardiff on Sunday."