If GLA was serious in its intent to curb private car congestion they would allow licensed taxis free-of-charge drop-off and pick-up access, thereby encouraging the modal shift they say is necessary.
However taxis will also be subject to the £2 charge which can rise quickly to £30 for 31-60 minutes.
PS: any minute now one of the EDI-boosters will be along to crow that it's only £1 drop-off there. Let's see what happens...