Public support for theatres in the UK is being examined by the theatre arm of the Culture Select Committee in the House of Commons.
West End theatres raise £1.5b each year for the economy
Chaired by Gerald Kaufman, it explores reports on issues affecting British theatre, especially London's West End.
Theatrical bodies, including The Writers Guild of Great Britain and The Theatres Trust were due to give evidence to the committee on Tuesday.
The meeting will also look at the future of public subsidy.
Other bodies due to give evidence to the Culture, Media and Sport Committee are The National Operatic and Dramatic Association, The Central Council For Amateur Theatre and The Little Theatre Guild of Great Britain.
The committee had already identified a number of relevant issues to be tackled.
They include the performance of the Arts Council in developing strategies and priorities and disbursing funds as well as support for new writers, performers and buildings.
The significance of the theatre as a genre within the cultural life of the UK and in the regions specifically has also been highlighted as an issue.