Exertis has acquired Computers Unlimited, which supplies a range of third party branded software, IT hardware and consumer electronics products to over 2,000 partners in the UK and Europe.
The business employs 200 people and operates from offices in London, Paris and Barcelona.
The acquisition brings new product categories and specialisms to the Exertis portfolio, with a range of products sourced from 70-plus manufacturers including Apple.
Exertis Group MD Niall Ennis said: "We will extend the reach of Computers Unlimited to the multiple retail channels that Exertis supports in the UK and France.
"This acquisition also extends the Exertis footprint into the Spanish retail sector where Computers Unlimited has a growing presence.
"We see significant opportunities to expand the reach of the brands currently working with Computers Unlimited into the Exertis operations in the Nordics and the Middle East."
James Sanson, Chairman and CEO of Computers Unlimited, said: "The opportunity to combine Computers Unlimited's brand and channel building talents with Exertis' retail, logistics and geographic strengths is compelling."
Exertis partners with 350 global technology brands and over 14,000 resellers, e-commerce operators and retailers across Europe.
In its most recent financial year to 31st March 2014 Exertis reported £2.3bn turnover and 22.4% growth.