The group, previously known as Intellect, will throw its weight behind Code Club, an which encourages children to learn more about coding.
It will lobby government on behalf of tech companies, work to tackle cyber crime and work in partnership with UKTI to help tech firms identify export opportunities overseas.
Julian David, techUK CEO, said the campaign, which focuses on tech firms of all sizes, would help Britain deal with the the disruptive challenges that change and innovation always present.
“Tech is the beating heart of the UK economy and techUK is proud to represent the companies that are our future,” he said.
The business secretary, Vince Cable, said: “The UK is home to numerous innovative, high tech, companies.
“Through our Industrial Strategy we are working with the ICT sector to identify those areas where government can assist growth; in particular, training, access to finance, procurement and support for innovation through the Catapult programme.
?techUK will be at the forefront of building our relationship with an industry that employs around 1.3m people across the UK.