here's a link to the same query not long ago.....Bombuslocorum answered before and taught me something....
"These are bagworms (Lepidoptera: Psychidae), which are caterpillars that live and feed within a protective silken tube incorporating detritus picked up along the way (though other species use different adornments)"
I hope this helps
I was reading another discussion about a creature which looks exactly the same and thought how strange they look! Someone identified it as a bagworm. This is the link: http://www.nhm.ac.uk/natureplus/thread/2923?tstart=0
I hope I have been of help
Yes that looks the same. However when I google search Bagworm it doesn't look like that. Google search for Lacefly Larvae looks more promising.
Thanks. My wife got such a shock when she realised the thing was moving across the ceiling.