How do I take out the cylinder barrel of a upvc door without a key?

I've lost the key to my upvc door so can't take out the cylinder barrel which stops me taking the whole lock out and replacing. Is there a way I can do this without the key?
andy, April 2005


done
How do I remove the barrel of a my pvc conservatory door when it is locked and no key. could I take the door of the hinges and do it that way. ? Will it come off with the door locks on?
cheers

Richard, October 2008
Call a locksmith as he will be able to remove and replace easily. Inexperienced drilling can make a mess and cost more.

reed, September 2005
Drill just above where the key enters the barrel i do it with an sds drill and masenary 6 mm.....

Tricky, May 2005
the only way I can think of is drill the center out and hope its not one of the new hardend steel jobs

111, April 2005