A daily newspaper based in North Wales has announced it will no longer sell copies in the south of the Principality.

Around 100 print copies of the North Wales Daily Post are currently available for sale in Cardiff, where the Welsh Assembly and other national institutions are based.

However publisher Trinity Mirror has now put an end to the practice saying South Wales readers can access the paper online or via its mobile and tablet apps.

According to a report on BBC Wales, the company announced the move in a letter to readers this week.

The letter said that the paper’s move to new digital publishing platforms had proved “extremely successful.”

It went on: “The continued and growing development of our content in digital format has enabled the Post to grow its audience across multiple platforms, in line with the requirements of readers who – while they may still enjoy printed newspapers – often find that mobile-compatible formats fit more readily with their busy lives.

“Therefore, in line with the trend of readership migration to our other platforms, we believe the time is now appropriate to call a halt to the daily deliver of a small number of Daily Post newspapers available on sale in Cardiff.”

It is understood that the last delivery of Daily Posts to South Wales took place last Saturday, 18 January.

The Welsh government has experssed concern at the move.

A spokesman told BBC Radio Cymru’s Post Cyntaf programme: “Although the Welsh government has no direct responsibility in relation to the newspaper industry in Wales we are concerned with this announcement, which could have an impact on an already declining media presence in Wales.”

Mike Unger, a former editor of the paper, added:  “I’m told it’s less than 100 copies, but they are 100 influential copies. They are the people in the councils, the Welsh assembly, the authorities and the elected members for North Wales.”

Trinity Mirror has declined to comment further on the BBC report.