you access it by taking the pannel off the back of the centre console. push both front seats fully forwards and remmove 2 x screws either side of the rear pannel. there easy to spot as there are no other screws there. once removed use idealy a trim tool but you could use a srewdriver wrapped in tape to pry the top of the trim towards you. the gap is between the top of the trim and the arm rest. there are two clips on the inside of it on each corner so pry on the top corners so's not to snap the trim. it will now unclip and pull off. you can now acces the handbrake adjuster through the gap at the bottom. you will need a medium/long 3/8" extention, 3/8" ratchet and 12mm deep socket and a torch. and adjust away!!