Choral Music Public Domain

Where / How to find Vaughn-Williams account?

Hello! I am looking for a copy of the orchestral and choral score for "R. Vaughn Williams Serenade to music. "Does anyone know if this piece is in the public domain and yet where I could go buy a copy of the full orchestral score? I'm looking for a good price too, if that's possible. Thanks!

You could go here and spend £ 30: – http://www.amazon.co.uk/Vaughan-Williams-Complete-Symphonies-etc/dp/B00004YA0V