Zenith was placed 42nd in the annual Sunday Times Grant Thornton Top Track 250 round up of the UK’s most successful mid-sized private companies.
Zenith recently completed its sixth MBO in 28 years.
The investment by Bridgepoint supported the acquisition of CVL, which expands the company’s operations into the HGV market.
It also recently announced Lord Rose as its new chairman.
Rose was was knighted in 2008 for services to the retail industry and corporate social responsibility and granted a life peerage in August 2014.
Zenith’s chief executive Tim Buchan (pictured) said: “The team works incredibly hard to provide industry-leading levels of customer service. And it’s a focus on the customer that continues to drive our growth.
"It is proving to be a landmark year for everyone at Zenith with the acquisition of CVL and move to our new headquarters in Leeds.”