Ford locks need a regular spray of lubricant. Use the thin plastic straw that comes with the can and plugs into the nozzle....

Some have a metal sheild around the lock mechanism ,one side is part of the rear glass frame guide,the other is masticed to the door skin.This will need to be removed for access.As for the plastic shroud,just snip it away with a pair of cutters.It is an anti-tamper cover,and bin it.The lock barrel is secured to the door panel by a large c-clip type bracket.There is a special pinned tool that engages with the holes in the bracket to enable it to rotate to release the lock,but a suitable screwdriver will do the trick.With the lock out ,I would soak it in some penetrating fluid ,then work it with the key.This may free it off.Also,is there any wear in the key?as this will cause a problem on unlocking.Remember any of this type Ford key will lock the car ,but you need the correct and not too worn one to unlock.hth

Yes,this is the guide that needs to be removed.Don't worry about the glass,the window regulator will keep it in place if it is wound fully to the top.You may need to get a putty knife behind the part that is masticed if it has not been off before.Also be carefull not to distort the metal glass guide as it is made only of flimsy steel and make sure when re-fitting this guide ,that it engages correctly with the upper window frame felt/rubber seal.hth

Don't like to leave a thread hanging.

Stil haven't got my hands on the car yet to remove the lock.

WIll update when I have......ebt