Queensland Parliamentary Speaker Fiona Simpson has ruled this morning that Arts Minister Ros Bates will not be referred to the Ethics Committee.

Ms Simpson told State Parliament the Opposition had alleged that Ms Bates deliberately misled the House when she explained why a lobbyist contact register had contained errors.

"The lack of accuracy in the tabled document is regrettable," she said.

"But that does not mean that the initial tabling was done with the intention to mislead.

"Nor does it mean that the explanation when tabling a replacement is necessarily misleading.

"Indeed members have long been encouraged to address mistakes as soon as possible."

However, the Opposition says it will continue to pursue Ms Bates over contact with lobbyists.

Today, the Opposition again targeted Ms Bates in Question Time, asking about meetings with former Brisbane mayor Sally-Anne Atkinson, which were not included in her lobbyist contact register.

Ms Bates again rejected the claims of wrongdoing.

"Any lobbying activity undertaken is recorded in the lobbyist register - end of story," she told the House.

Treasurer Tim Nicholls joined the defence, saying the Government engages with interest groups.

"Unlike those opposite who believe we should be hermetically sealed in a vacuumed jar, speak to no-one about anything at any time," he said.

Yesterday, Ms Simpson told the House there was no evidence that Premier Campbell Newman had deliberately misled Parliament and the matter will not be referred to the Ethics Committee.

Former Liberal National Party MP Alex Douglas quit the party last year after he was replaced on two Parliamentary committees.

Dr Douglas accused both Mr Newman and the Leader of the House, Ray Stevens, of misleading Parliament, in saying he had been happy to change committees.

Dr Douglas, now the independent Member for Gaven, says he will not dispute the Speaker's ruling.

However, he has questioned whether the Ethics Committee has a future.

"Obviously a series of extraordinary things occurred and I would point out they certainly were not the norm," he said.

"My concerns now is whether the Ethics Committee, which is the oldest committee of Parliament, really has any further role."

Mr Stevens alleged that Dr Douglas himself had misled the House.

Dr Douglas and Mr Stevens were not referred to the committee either.