Just wanted to add, I've gone back to the standard stereo after binning of the Sony one. My wiring has been cut back to the main car loom. I cant remember what the memory live wire is. I thought it was the yellow one?

Each time I turn the key over the stereo requests the keycode every time.
Im sure the main loom to stereo loom is

Red wire to yellow wire(the cars red permanent live to the stereo yellow, memory live-switched?)
yellow wire to red wire(the cars switched wire, to the stereo red permanent wire) So when the key is removed the stereo doesn't require the keycode every time.

I can't find the yellow/grey wire in the main loom so i've had to wire it to the switched live. I wonder if I can use the cigar lighter bezel bulb wiring instead assuming they had lighting cigar bezel as standard.

I dont use the red/white wire as I've binned of the wiring in the bootlid in favour of a amplified aerial mounted under the dash(de-wipered bootlid)