Odd. You must have missed these results when you did your own search before posting here.
http://www.vauxhallownersnetwork.co.uk/index.php?threads/zafira-boot-wont-open.182744/
https://www.avforums.com/threads/zafira-08-tailgate-wont-open.1750095/
http://howtomendit.com/answers.php?id=306781
http://forums.moneysavingexpert.com/showthread.php?t=3093686
http://www.zafiraowners.co.uk/forum/16-technical/3033-boot-wont-open.html
acp, April 2017
