Boom wins Tour of Britain as Cav takes finale
Boom effectively secured his victory by coming second in the time trial which started the two stage final day, leaving the sprinters to contest the final 80km trek.
Cavendish also won the points competition after his final stage win and the HTC team were delighted with their efforts.
"Rabobank was doing a lot of the work at the front today, and Team Sky was also controlling," explained sport director, Allan Peiper.
"But by the last kilometre Renshaw and (Bernhard) Eisel were on top of it, and dropped Cav off in the usual fashion for the last time.
"The crowds were great today, it was a spectacular finish for Cav in his home country, as well as for the team to finish a long tour on a high note."
It was Cavendish's 11th win of the season and the soon to defunct HTC-Highroad team's 570th win since 2008.
For Boom it is his second multi-stage Tour victory after his success in the Tour of Belgium in 2009.