Boris Johnson will visit the Lyric Hammersmith today to see how £1m of funding from the GLA is being spent.
The funding is an investment into the theatre's education programme through which the Lyric trains and supports young people in theatre and the arts.
During today's visit he'll sit in on a dress rehearsal by the young cast of 'Mobile Phone Show' by award-winning playwright Jim Cartwright, as well as taking a tour of the theatre.
The Mayor's contribution is part of the wider redevelopment of the Lyric which will see the building get its first major facelift in 30 years.
More top news
Corbyn was unveiling a poster less than a mile away as Khan gave his final campaign speech to party supporters in London.
Hay fever is an allergic reaction to airbourne pollen. There are 2 million sufferers in London (that's one in 5 people).
The man suffered head injuries after falling from Westminster Bridge and landing on concrete steps.