Does a 2005 TDV6 HSE with Dolby have a radio security code?

I want to disconnect the battery but can find no code, nor mention of one in my docs!

Thanks,
Pete

I think it's been asked on here before and there is no code.

I'm sure someone with a little more technical nouse will confirm  ON THE WAY: BMW F21 M140i
MERCEDES GL350 - Metallic Navy Blue w/Grey interior

GOING: BMW F31 335D MSport+ xDrive Touring
GONE: Land Rover Discovery 4 HSE - Stornaway Grey w/Black Interior (wish we'd kept it )
GONE: BMW F10 520D MSport - Carbon Black
GONE:MY12 RRS SDV6 HSE Sumatra/Ivory/Grand Black Privacy glass

I had my battery off yesterday for around 20 minutes and did not need a code, i did loose all the presets though --------------------------
RRS S/C, Java Black
X-Type Jag sport
LR D2 GONE
BMW 540 GONE

No code for the radio. If you disconnect the battery, you will lose the time on the clock and the trip/mpg figures

Radio presets remain, you just need to press one of the presets as it will default to 87.5
 Bodsys Brake Bible
Software Updates Contact me
RRS Timed Heat/Remote kits - Contact me
BAS Engine Re-maps/ EGR Blank EuIII and EuIV
Clock On The Dash/ SNOTM /3Flash / BT Update /Service Reset/Error Codes read\ Gearbox Reset
See it HERE

Thanks for the replies, much appreciated.
Pete