In reply to birdman:
I washed my Mountain Equipment bag a few years ago. Before I started I spoke to the owner of a local Laundrette about using their Tumble Dryer without actually washing the bag their. Some Laundrettes do not let you use the Tumble Dryer alone.
Once I got the approval to use the Oversized tumble dryer I washed my bag in the bath using pure soap flakes from the local Spar type shop. I then took the bag to the Laundrette and used their Spin Dryer to get rid of some excess water.
After I got rid of the excess water I fed the Tumble Dryer with countless fifty pence pieces untill I had a fluffy bag. I also placed a couple of training shoes into the Tumble Dryer as well to help stop the frathers clumping together.
On the whole I was pleased with the end results however the whole process still had a few clumps of feathers which over the years mostly broke apart.
If you do wash your bag in the bath may I sugest that you carefully move the bag ic case you tear the stitching of the baffels.