The Independent Corruption Against Corruption is pressuring Premier Mike Baird to stop lobbyists meeting in secret with bureaucrats, ministerial staff and parliamentary secretaries, signalling the government's moves to clean up NSW politics do not go far enough.

Mr Baird promised an overhaul of lobbying in NSW in May last year - a fortnight after his predecessor Barry O'Farrell resigned over giving false evidence about a $3000 bottle of wine he received from businessman Nick Di Girolamo, who was lobbying the government.

Premier Mike Baird promised an overhaul of lobbying in NSW in May last year. Credit:Edwina Pickles

The new regime, which began in December last year, required ministers to publish quarterly diaries summarising all external meetings, and imposed new ethical standards on anyone lobbying the government.

An impact statement on the changes prepared by the Department of Premier and Cabinet in April said the laws ensure the release of timely lobbyist information without unnecessary administration or costs.