Table 5 of your Air Quality Strategy Appendix C includes "No Idling Zone (quantified for taxis only)" as part of your modelling of how your policies will reduce pollution in London. Policy 3.4.6.of your Strategy states that "The Mayor, working with the boroughs, bus and coach operators and other organisations will establish a No-Idling Zone throughout London." You expand on this by stating that "The Mayor will make London a 'no idling zone' for parked vehicles with a particular focus on buses, coaches, taxis, private hire vehicles, and delivery vehicles." However, in answer to my question 684/2011 you deny that there will be any enforcement of no idling areas for taxis. Please explain this apparent contradiction?