Please help identify this painting

Vladimir Polunin came to England as Diaghilev's main designer for the Ballets Russes and remained in England to teach scene painting at the Slade School of Art. He produced set designs and used famous Italian artworks to decorate London's Phoenix Theatre. His book The Continental Method of Scene Painting, was a memoir of his life and career. Vladimir Polunin married Elizabeth Polunin (nee Hart), (21 May 1887- 1950), also an artist and theatre designer, most notable for her work with Sergei Diaghilev and the Ballets Russes.


This painting may have some serious value.

Thank you very much for the response.
I love that he did some work with Picasso for the ballet and that there is a portrait drawing of him by Picasso - http://www.arttop10.com/blogs/1/27/picasso-and-modern-british-art.
Great find on his wife and her paintings - someone might be able to comment if they are similar pieces of work.
How would one progress this search - is a paid service pretty much the only way?

Find an art appraiser and be aware they charge around 10% of the appraised value.