Hi Andy,
Emergency Key Access. Look in the alarm and locks section of your owners manual.
It should be on a card with your paperwork, if you have it, It is a 4 number code.
If you do not have it then get it from your local LR dealer FOC, if you provide proof of ownership.
Or you can get it online for £20.
** the above two points are OK as long as a previous owner has not changed it.
Or, someone with diagnostics should be able to retrieve if for you from the car.
Cheers