Here's a schedule of performance times so you can plan your weekend.
The nominations for the most prestigious awards in the UK theatre calendar have been revealed today.
The websites drew complaints that advertised prices were misleading
Michelle Ryan has told London Tonight how excited she is to be making her West End debut at the Savoy Theatre.
The Enfield-born actress, who first appeared on TV screens as Zoe Slater in Eastenders, is taking on the lead role in the musical Cabaret - a part made famous by Liza Minnelli in the 1972 film.
She said it was amazing to be treading the boards in London, after a four week tour around the rest of the country:
"Being out of town, everyone was so kind, but it made me realise how much I love London and it does feel like something special," she said.
"I used to go and watch all of the musicals and I appeared in a couple of gala performances when I was 14 at the Palladium and Her Majesty's Theatre, but to be opening at the Savoy in London - which is my home town - that's really amazing."
Stars of West End's biggest shows are set to perform at the world's biggest free theatre event in Trafalgar Square this weekend.
There are live performances of Billy Elliot The Musical, Chicago, Wicked, We Will Rock You, The Wizard Of Oz and Shrek.
The stars of London's West End will be entertaining families in Hyde Park this weekend in a special two-day event.
The Jubilee Family Festival is expected to attract up to 50,000 theatre-fans on Saturday and Sunday, with performances from Billy Elliot the Musical, The Lion King and War Horse.
The event will also feature motorcycle stunts, parachutists, marching bands and traditional games such as tug-of-war and welly-throwing.
37 groups from around the world will perform Shakespeare plays at the Globe Theatre in 37 different languages. The first performance is Troilus and Cressida tonight featuring a New Zealand haka. The festival's director Tom Bird hopes it will encourage London's communities to come to the theatre.
The stars of London's West End shows will perform in Trafalgar Square today, to mark 100 days to go until the Olympic Games.
Team GB athletes will also take part in the show, entitled 'Welcome the World', which has been specially choreographed for the occasion.