I assume wiggling didn't get the key out?
Take plastic surrounds away
Undo torx bit on the barrel casing
turn key inbetween 2 of the "notches" (can't remember which)
and pull
Take plastic surrounds away
Undo torx bit on the barrel casing
turn key inbetween 2 of the "notches" (can't remember which)
and pull
Worth noting that underneath the barrel are 2 'tabs'. When the key is turned to the correct release position, these tabs become able to be pushed in with an impliment such as a screw driver, thus enabling the barrel to be slid out.