The Duxford Liberator did fly on rare occaisions, I saw it (on the ground) at Duxford along with OHB's T33's. I seem to recall that it was owned by David Tallichet, and on arrival in the states was subsequently purchased by Kermit Weeks, or he may have purchased it here. Again I have a dim recollection that it was 'at risk' at Duxford due to a lack of money by its owner, hence it moving on. It was there for 3-4 years off the top of my head. I think if you did in fact see a Liberator, its likely it was the Duxford aircraft.