Canterbury and York XIs 1964

If not 1964, it's 1963.  On the left is the Canterbury XI, with the York XI on the right.  Presumably they were finalists in the House competition, but why weren't they in whites?  Thanks to Trevor Chapman for the photo.

At the back: Martin Seaman, Roger Goodwin, Malcolm Barnham, Kevin Kennedy, John Amberton
Standing: David Fitt, Paul Claxton, Graham Winn, Brian Orford, Roger Lincoln, David Riches, James Busby, Patrick Spruce, Richard Abrahall, Mike Hammond behind Trevor Chapman, Wally Gowing, Edgar Riches.
Seated: William Kiddell, Neil Dexter, Tim Myhill, Stephen Deere

Contents The Gallery Cricket 60s Cricket Canterbury & York 1964