Sound Recording Services London

I have a recording of a compilation of English poems read by famous actors but have been unable to find the original. The compilation includes Alec Guinness reading "Journey of the Magi" by TS Eliot, Richard Briers reading Kipling's "If" and some other superb stuff. Does anyone know who reads Wordsworth's "Composed upon Westminister Bridge", and Coleridge's "Xanadu"? What a tone! I have recently watched "The Sound of Music" and I have a feeling it's Christopher Plummer. I would also like to know who read the outstandingly intense, but old, recording of "Ode to a Nightingale"…
Haha! Just goes to show that very specific questions don't get a lot of random answers!

Yes, it's Christopher Plummer, and the actual title of the Coleridge poem is "Kubla Khan."