Nine Illawarra pubs and clubs have been named on a NSW Bureau of Crime Statistics and Research list of the state's 100 most violent licensed premises.

And some will be forced to comply with tougher licensing laws as a result.

The Glasshouse Tavern moved up the rankings from fifth to second with 36 assaults last financial year.

The nightclub has already faced new restrictions since December.

These include 2am lockouts, plastic cups after midnight, extra security, no more than four drinks per order and bans on shots, doubles and mixed drinks with more than 5 per cent alcohol.

The Towradgi Beach Hotel was ranked equal 23rd with 20 assaults and the Harp Hotel was equal 30th with 19 violent incidents.

Both pubs will now be subject to the tougher licensing conditions after Premier Nathan Rees declared in July that any licensed premises with 19 or more assaults a year would be restricted.

Raz Dema's RDL Group owns both the Glasshouse Tavern and The Harp Hotel, along with Castros (ranked 39th with 17 assaults) and The Ivory (ranked 64th with 13 assaults).

Mr Dema could not be reached yesterday.

A spokeswoman for the Towradgi Beach Hotel declined to comment.

Other Illawarra nightspots named in the bureau's list were the North Wollongong Hotel (55th with 14 assaults), Hotel Illawarra (64th with 13 assaults) and Dapto Leagues Club and Shellharbour Workers Club (equal 97th with 11 assaults).

The most violent pub in the state last financial year was The Mean Fiddler at Rouse Hill with 42 assaults.

Wollongong crime manager Detective Chief Inspector Joseph Mura said that although the Glasshouse Tavern's ranking had jumped, the number of assaults had gone down in the last year.

"The number of assaults has gone down but so has everyone else's," he said.

"There's a lot more room for improvement."

Insp Mura said police were still working with licensed premises to further reduce alcohol-related violence in the city.

While he agreed with the tougher measures Premier Rees had enforced, Insp Mura said he would go even further.

"Lock-out times could be a bit tighter, if you lock out between midnight and 1am it stops migration between the hotels," he said.

He also proposed reducing patrons to two drinks per order, better policing of responsible service of alcohol rules and better transport options to move people on after they left pubs and clubs.

"The summer bus was a great idea but we need more and we need more funding," he said.