Extending public transport and promoting art galleries and book shops as late-night alternatives to drinking activities are among the ideas put forward during the review into Sydney's lockout laws.

The New South Wales Government introduced the laws in 2014 in response to antisocial behaviour in Kings Cross and the CBD.

The laws impose 1:30am lockouts at venues in parts of the city, with drinks stopping at 3:00am, and bottle shops across the state are also required to close at 10:00pm.

A review into the laws is expected to be handed to the Government by the end of August.

The review, headed by former High Court judge Ian Callinan, was designed to provide an independent, open and transparent assessment of the laws.

The Government has released the outcomes of a series of roundtable meetings it held with representatives of industry, community and government, as part of the review process.

Deputy Premier Troy Grant said some of the ideas raised include more late-night public transport, clearer defined rights for live music venues and a greater role for arts and cultural organisations.

Keep Sydney Open Campaign Manager Tyson Koh said there were a lot of positive ideas that came out of the meetings, including a push to "diversify the offer of what people can do at night time".

"Everything from extended retail hours to food and more music, more art galleries staying open; these are the things that people want," he said.

"Unfortunately, government has stood in the way of a lot of these things happening in the past."

Another suggestion to arise from the discussions was keeping public transport running until 4:00am on Friday and Saturday nights.

Keep Sydney Open Campaign Manager Tyson Koh said many positive ideas came from the meetings. ( ABC News: Lara Hyams )

"If we get the transport thing right I think that is half of our problem solved," Mr Koh said.

However, Mr Koh said while improving Sydney's night time economy was good, he still wanted the lockout laws wound back.

He said the 3:00am close was too restrictive.

"Certain venues should trade up until that time, others should be able to trade later, others earlier," the campaigner said.

"So I think venues should be assessed on a case by case basis."

The laws have been controversial since they were introduced, with several protests held to oppose them, but NSW Premier Mike Baird has stood by the laws and defended them in a Facebook post which went viral earlier this year.

Hospital wants lockout to remain

A number of doctors have been supportive of the lockout laws and have cautioned the Government against winding them back.

St Vincent's Hospital spokesman David Faktor sat on the roundtables and pushed for the lockout laws to remain in place.

"In terms of the 10:00pm closure of bottle shops and the 3:00am last drinks, they're making a huge difference," he said.

"Serious facial fractures at St Vincent's have dropped 60 per cent in the two years.

"Reducing the availability of alcohol is really an effective way to reduce assaults."

Mr Faktor said community safety did not need to come at the expense of Sydney's night life.

"St Vincent's is confident that we can make Sydney's night life both safe and vibrant at the same time," he said.