Following a meeting with Australian Foreign Minister Marise Payne on Thursday in Canberra,Mr Raab also said his nation hoped to take a lead in tackling climate change and would encourage others to follow its example.
Australia banned tech giant Huawei from bidding to build any of its 5G network in 2018,with its intelligence services finding it was too difficult to counter an attack by a state actor directing a firm that already had a foothold in the system.
Mr Raab said the British government was confident it could protect the core of the network with the safeguards it put in place.
"We took a technical approach to this,we looked at the supply chains,we looked at the security risk and the resilience of our infrastructure and indeed those of our allies,and we took an independent decision,"he said.
"The approach,as you'll know,is that we're confident that we can protect the core and cap,to the tune of 35 per cent,the access that high-risk vendors have at the periphery as well as ban high-risk vendors from any of the highly sensitive locations."
Mr Raab said there was nothing in the decision that would inhibit the sharing of intelligence with the Five Eyes alliance of Britain,Australia,the United States,Canada and New Zealand.