Ken Livingstone has failed to organise adequate new year celebrations for Londoners, despite a £1m budget, according to the Liberal Democrats.
A fireworks display is planned for New Year
With just over a month to go until 2005 the Lib Dems say the Mayor has organised an event which Londoners cannot take part in.
Despite plans for a fireworks display at the London Eye the Lib Dems say the event has not been publicised properly.
But the Mayor said 150,000 people will be able to watch the display.
Dee Doocey, culture spokesperson for the Lib Dems, told BBC London: "This year Mr Livingstone seems to want to hold a secret new year party for London which none of us are invited to.
"There has been no advertising, no publicity and no promotion.
"In 2001 there were no celebrations, in 2002 he advised everyone to stay at home and closed Trafalgar Square and in 2003 there was a very small fireworks display.
"It's a hugely missed opportunity not just for Londoners but for tourists."
Holding a free ticketed event in Trafalgar Square is among the ideas the Lib Dems will suggest in a report to be released on Monday.
Mr Livingstone said: "Londoners will celebrate New Year's Eve with a spectacular fireworks display visible from all over London and with 150,000 Londoners able to view it directly in the vicinity of the London Eye.
"At the same time we will provide free transport on the tube and buses so that Londoners can choose how they want to see in the new year and go home safely."