The proposed Night Tube service has suffered another blow as train drivers' union Aslef have rejected the new revised offer .

Aslef union bosses confirmed on Tuesday (December 8) that the union has unanimously rejected the revised pay offer set out by London Underground bosses in an effort to get the Night Tube service back on track .

The revised pay offer proposed by TfL included a pay rise of four years, a £500 bonus and the introduction of part-time staff.

Initial reactions from unions last week were not favourable , with RMT saying the new offer "falls short".

On Tuesday (December 8), An Aslef union spokesman told getwestlondon : “It's not that we rejected the pay offer, we rejected the unsociable hours linked with the pay rise.”

According to the union, workers were told that they would not get the pay rise unless they agreed to working Night Tube shifts.

“The word in transport circles in the capital is that there is no way the Night Tube will come in before Boris leaves the office," said the spokesman.

“We believe that it has always been Boris' vanity project, which was designed to be turned down, designed to be rejected.”

The Night Tube has suffered major setbacks from the start, after initially proposed to launch in September .

The union claims that if the Night Tube went into service now, it won't make a profit until 2030.

The Aslef spokesman continued: “TfL are making sure that it won't be brought in, they are waiting for Boris to leave so that it can quietly be dropped.

“It is going to be dropped.”

Steve Griffiths, Chief Operating Officer of London Underground, said: "The Night Tube will boost London's economy, support thousands of new jobs and radically cut journey times for those travelling at night or in the early morning.

"We have listened to union feedback and have made absolute guarantees that no existing driver will have to work the Night Tube.

"Instead we are recruiting part-time train drivers specifically to run this service.

"It's disappointing to hear that Aslef's executive has rejected our updated pay offer, once again without consulting members and on the basis of wanting more money and more time off.

"No employer could meet those demands on top of the fair and affordable deal already offered.”