Well thats an autotrader description so they go for length even if things are effectively doubled. headlight wash, Icons and adaptive lights are all visibility pack etc.
But you are right, that car has all the Packs bar the premium package and Steering wheel heating, Bootlid powered, Split-folding rear seats Lumbar support, soft close and oddly Rear seat entertainment (OP has it got screens in the back?) thats a £53.5k car assuming its white, if not add another £685 from new.
Awful lot of money to spend on a 520d i must but they're expensive once some options are added on.