The application from Bennetts Associates details plans which would see a complete overhaul of the historic building inside and out.

The main auditorium would be upgraded and renovated to improve access and create new uses for the space while a new foyer, box office and cafe/bar are also included, as well as improved rehearsal spaces.

A studio theatre, which would be used for smaller-scale performances, has also been proposed and community and learning spaces would be created to enhance the Citizens services for locals.

A spokesman from the Citizens Theatre said: “Submitting this planning application is a milestone in our project to deliver the most comprehensive redevelopment of the Citizens Theatre building in its 135-year history. We thoroughly look forward to the council’s decision.”

The plans include the demolition and extensive redevelopment of much of the building which has been used for more than 120 years.

Buildings to the north and south of the theatre are among those set to be completely removed.

Designs aim to reduce exterior noise from traffic and trains, create a space that would be filled with natural light, and extensive work to the frontage of the building will feature statues of William Shakespeare, Robert Burns and the four Muses which once stood on the roof of the original structure.

A lift to mezzanine level adds further access to disabled visitors, which is a central element.

The modern facing at the front of the building will be stripped back to the original sandstone layer, and the public would be able to view the historic stage machinery and workshops, the former by use of a public staircase.

While the machinery, which includes timber lifts which would once have raised actors and props to the stage, will not be returned to use, it will be preserved in the same position it was last used, capturing an important moment in the theatre’s past.

Councillor George Redmond, executive member for jobs, business and investment at Glasgow City Council, said: “The redevelopment of the Citizens Theatre will lead to a new chapter in the story of one of the most famous theatres in the UK, paving the way for use by theatre companies and local people and organisations in the decades to come.”