Also fixed the boot lock since it was seized completely solid
Removed via the door for for the light cluster
Disassembled the main body
The lock barrel was completely seized in the housing. Lots of WD40 and wiggling and it finally came free.
Crusty!
Started removing the tumblers
All disassembled. It took about half an hour cleaning schmutz out of the barrel with an assortment of pokey tools, degreaser and compressed air before the little door would close again!
Cleaned all the tumblers up
Reassembled prior to re-greasing
Going back together
You can see the cam which operates the central locking here via these two microswitches
All back together and ready to put back in