Long story but my rangey was parked up for a while. Went to get in it and then discovered the drivers door wouldn't latch shut. So pushed it too and left it. My father-in-law then decided to be "helpful" and saw it ajar and (presumably) used some brute force and ignorance to close it and latch it, and somehow in the process, the locking button has been depressed.

And now I can't open the door from inside or outside. Both inside and outside door handles feel like there is no resistance (like the cables have snapped) and the lock doesn't respond to the central locking remote. And to further complicate things, I'd installed some of those colour coded handle covers that cover up the key hole.

Is this the scenario where you go in through a rubber bung exposed when you open the rear door, or is this the try and rip the door card off scenario? 2004 Vogue TD6 - Remapped
2008 Porsche Cayenne S
1998 Lotus Elise

I think you can open it using the bung when the rear door is open, as you thought might be the case.

Not done it myself though.

 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport