In the novel 4.50 from Paddington, Ballet Maritski is the Paris based dance company run by Madame Joilet. Anna Stravinska is one of the dancers in the troupe.
The ballet company is on a tour of England for six weeks. They played at Torquay, Bournemouth, Eastbourne, and Hammersmith. After that they returned to France, but Anna did not return with them.