One of my favorite composers of all time by far. We played all of Lincolnshire Posy in my high school band two years ago. As a saxophonist, of course, I loved it! Although the time signature changes were strange at first, once you get the feel of it, it's actually pretty fun. There's not a lot of pieces you'll find time signatures like 1.5/4 and 2.5/4. I definitely learned a lot from playing it.
Favorite movement in that piece, although I love them all, would have to be the sixth one, The Lost Lady Found.
As TheMeaningofLife said, he is definitely a star in the wind band world.