What options do I have in gaining access to the trunk of my 2004 jaguar xj8 that has gone into valet lockout

All back seats are either screwed down or hooked in. you need to use a little muscle and lift up your back seat to see which is which. there is no other way to gain entry to your trunk.Trust me Ive locked my keys in my trunk too. Now i have a hidden spare to my door and trunk. GOOD LUCK

Not sure if the 2004 models are similar to the 1996 models in this aspect, but I will assume they are. In the center console (the junk box) at the back is a switch (Valet), when this switch has been pressed, the glove box and the boot (trunk), can only be opened with the Master key being physically inserted into the lock (the hole next to the model label on the boot), this is so that the valet with only the valet key (green key), can not get access to your luggage/valuables. Once it has been physically unlocked with the master key (black key), it will again open by poking kitty on the nose (button press).