The Post Office is set to increase its presence in the UK telecoms sector by launching mobile services later this year.
Consumers can already sign up for a landline and home broadband from the firm, and from the autumn, it will be taking on the UK's 3G and 4G providers too.
The Post Office is pledging to deliver "value for money and transparency" in a market it believes is "dominated by complex offers".
"The launch will enable people across the UK to meet all their telecommunication needs with one of the most trusted brands on the high street, visited by millions of customers every week," it said.
EE's mobile network will form the backbone for the new Post Office service.
Martin George, Chief Commercial Officer at Post Office, said the new mobile offering - supported by EE's infrastructure - is "a significant milestone" in the company's journey of change.
"[It is] testament to our continuing efforts to offer more essential services for our customers," he stated.
Mr George claimed that the Post Office is in "an ideal position" to offer a genuine alternative to the major mobile broadband providers.
He cited research conducted by the firm, which indicated that 36 per cent of customers would consider the Post Office as their mobile provider.
"This is a fantastic vote of confidence in the Post Office brand - voted one of the most trusted brands in the UK," Mr George stated.
He said the Post Office's network of over 11,500 branches, combined with its online, and call centre presence, provides "the perfect platform" to become one of the most credible providers of mobile services in Britain.