From the Labour Party website:
Choose Labour’s next Prime Minister
Over the coming weeks and months Labour members and supporters will choose our candidate for next Prime Minister of the United Kingdom.
During the leadership election the two candidates will take part in a series of live debates organised by the Labour Party and media organisations. You will be able to watch the Labour Party debates live on this page — on your computer, smart phone, tablet and TV.
Unlike previous contests, these events will be available for everyone to watch. No matter where you are in the country you’ll be able to hear what the candidates have to say as the debates happen.
There will be nine official debates as part of the Leadership timetable.
Below are the current debates agreed by the NEC Procedures Committee.
Cardiff: 7pm to 8.30pm Thursday 4 August
Gateshead: 7pm to 8.30pm Thursday 11 August
Nottinghamshire: Wednesday 17 August – BBC Victoria Derbyshire
Birmingham: 7pm to 8.30pm Thursday 18 August
London: Monday 22 August - Channel 4
Glasgow: 7pm to 8.30pm Thursday 25 August
Venue TBC: Thursday 1 September - media organisation TBC
Venue TBC: Thursday 8 September- BBC Question Time
London: Wednesday 14 September- Sky News
Check this page for the latest information on further Leadership debates.