Then either ask at the front desk or in the doors between
the
modern curvy library and the ugly 60's tower block, to the right
through
more doors and up the steps, to right at top of steps and through
another set of doors, turn right and go down corridor, thought more
doors, you are now facing us (there is a seating area to left and lifts
to your right) - there is a sign hanging from the ceiling.