Hello there,
After much net searching,and scratching of the little grey cells I have discovered that is:~
Rachmaninoff Rhapsody on a Theme of Paganini (18th Variation)
and just to confirm this,here is a rendition at YouTube. https://www.youtube.com/watch?v=FLQALZFW85E
Now,I hope this is right!
According to the (very helpful) guys at the BBC Information Office it is:
Tchaikovsky Piano Concerto No1,2nd Movement.
Here is another youtube clip of said movement:~ https://www.youtube.com/watch?v=-qDZE9iQ7bQ
If it's NOT that do let me know and I will chew the BBC b@lls off! LOL