XK8 completely flat battery

[H23032]

Due to my own stupidity my XK8 (2005) now has a completely discharged battery. The car is locked, the key does not work in the driver’s door, and I cannot imagine what is to be done. I wil try the AA, and also a Jag dealer, but just in case, anyone got any ideas?

[P700DEE]

Is it the right key? Tried the boot and the pasenger door?

[H23032]

Thanks very much. Have now learned of the secret keyhole in the XK8 logo. It works, so problem solved,