A video of a PR boss querying a journalist's right to ask the city's mayor a question has gone viral.

Bristol Local Democracy Reporter (LDR) Alex Seabrook asked Marvin Rees if he saw any irony in the fact he flew 4,600 miles to give a talk on climate change.

But head of external communications at Bristol City Council, Saskia Konynenburg, questioned the LDR's right to probe the issue.

She said she could not "see the [story's] link to LDR".

Within hours of being posted, the clip had been viewed more than 250,000 times on Twitter alone.

The LDRS is funded by the BBC to provide public service reporting on local authorities. The reporters on the service are based with local newspapers.

LDRS said that two of its reporters have since been banned from future press conferences with the mayor.

A council spokesman said this was "completely false" adding that "all mainstream local media outlets" are invited to the briefings but that there had been a "long-standing mutual agreement" between the mayor's office and the Bristol Post about personnel attending press conferences.

He explained that whenever they are announced and held "LDRs would not be sent due to the narrow definition of their role as an impartial service".

Anger at the LDR's expulsion from the fortnightly briefings has led to other publications - including BristolLive and BristolWorld - to boycott them over the council's stance.

A BBC spokesperson added: "We are deeply disappointed by the decision taken by the Mayor's Office to not allow the Bristol LDR into his fortnightly press conference.

"It is an essential ingredient of local democracy that journalists should be able to ask robust, challenging questions to people in power.

"We have today informed the Mayor that the BBC won't be attending the fortnightly Mayoral briefings until this important issue is resolved."

During the exchange, Mr Rees insisted he saw "no irony" in flying to the TED conference in Vancouver in April.

"The argument was that mayors need to be involved in shaping international policy, so there's no irony because I was there shaping international policy," he said.

After Mr Rees spoke, Ms Konynenburg added: "My question is, Marvin was fully-funded by TED to attend this conference, so I couldn't quite understand what the role as an LDR would be in asking that question.

"I think it is probably [ok] from a journalist from a newspaper, but I can't quite see the link to LDR."

The council's response has done little to abate the furore over both its response and Ms Konynenburg's comments.

Leader of the Conservative Group at Bristol City Council, Mark Weston, said the "petulant response" from the mayor's office was "absolutely outrageous and unacceptable".

He added: "The role of the press in our country is to ask awkward and difficult questions of those in power.

"That is one of the ways politicians are held to account for their decision-making and is used to highlight potential acts of hypocrisy or inconsistency."

BristolLive and Bristol Post editor Pete Gavan added it was "vital that the BBC-funded reporters who make up the team locally are able to carry out their remit without interference".

"Inevitably, we will sometimes ask tough questions or raise issues that politicians might find tricky," he said.

"But we believe this is a key function of a free press - and a sign of a healthy democratic landscape."

Matthew Barraclough, head of the BBC's Local News Partnership, which oversees the public interest scheme, also tweeted his support adding the instance "makes the case for the Local Democracy Reporting Service in a nutshell".

"Without LDRs working hard on behalf of local news media and their audiences, these 'comms bosses' can control the narrative."