Install two lifts, raise floor levels and alter steps and a gate to improve access beneath the cathedral and beside Chapter House.

Official description

Alterations to undercroft of St Paul's Cathedral and minor alterations to Chapter House including (i) Installation of a new passenger lift and associated raised platform within the external contemporary undercroft of St Paul's Cathedral to provide step-free access between the Chapter House and the undercroft (ii) extension of the existing step at the eastern exit of the Chapter House following partial demolition of existing external staircase, landing, and railings to provide level access and replacement of existing security gate (iii) raising the floor level and removal of associated stairs at below-ground level and installation of external, open platform lift in undercroft (No other works to the Cathedral or wider undercroft).