JW411 - I believe the A20 Havoc remains were recovered, apparently for use in a restoration project. Not sure of it's current status or location though.
On a related note, the Air Britain "Beaufighter Crash Log" contains a photograph of the tail of Beaufighter TF.X RD210, perched up in a gully on Aran Fawddwy. I'm not sure when the photograph was taken, but despite having visited the area a couple of times in recent years, I've not been able to locate it. Does anyone know if it still exists, or has this been a victim of Snowdonia National Park's clean-up policies?